Fix warnings in CppUTest

[pcolberg]

Warnings from Ubuntu 22.04 debug build with GCC 11.2, which are all related to integer type mismatches, e.g., using int where size_t would be appropriate. These have likely all been addressed upstream, though updating to the newest version is not straightforward due to our customizations for multi-threading.

• lib/CppUTest/src/Failure.cpp

  [33/113] /usr/bin/g++ -DNOMINMAX -DUT_MALLOC_MACROS_DISABLED -DUT_NEW_MACROS_DISABLED -DUT_NEW_OVERRIDES_DISABLED -I/__w/fpga-runtime-for-opencl/fpga-runtime-for-opencl/lib/CppUTest/include -g -Wall -Wconversion -Wformat -Wformat-security -fno-strict-aliasing -fstack-protector -D_FORTIFY_SOURCE=2 -Og -std=gnu++17 -MD -MT lib/CppUTest/CMakeFiles/CppUTest.dir/src/Failure.cpp.o -MF lib/CppUTest/CMakeFiles/CppUTest.dir/src/Failure.cpp.o.d -o lib/CppUTest/CMakeFiles/CppUTest.dir/src/Failure.cpp.o -c /__w/fpga-runtime-for-opencl/fpga-runtime-for-opencl/lib/CppUTest/src/Failure.cpp
  /__w/fpga-runtime-for-opencl/fpga-runtime-for-opencl/lib/CppUTest/src/Failure.cpp: In member function 'virtual int Failure::getLineNumber() const':
  /__w/fpga-runtime-for-opencl/fpga-runtime-for-opencl/lib/CppUTest/src/Failure.cpp:73:16: warning: conversion from 'long int' to 'int' may change value [-Wconversion]
     73 |         return lineNumber;
        |                ^~~~~~~~~~
  

• lib/CppUTest/src/MemoryLeakAllocator.cpp

  [35/113] /usr/bin/g++ -DNOMINMAX -DUT_MALLOC_MACROS_DISABLED -DUT_NEW_MACROS_DISABLED -DUT_NEW_OVERRIDES_DISABLED -I/__w/fpga-runtime-for-opencl/fpga-runtime-for-opencl/lib/CppUTest/include -g -Wall -Wconversion -Wformat -Wformat-security -fno-strict-aliasing -fstack-protector -D_FORTIFY_SOURCE=2 -Og -std=gnu++17 -MD -MT lib/CppUTest/CMakeFiles/CppUTest.dir/src/MemoryLeakAllocator.cpp.o -MF lib/CppUTest/CMakeFiles/CppUTest.dir/src/MemoryLeakAllocator.cpp.o.d -o lib/CppUTest/CMakeFiles/CppUTest.dir/src/MemoryLeakAllocator.cpp.o -c /__w/fpga-runtime-for-opencl/fpga-runtime-for-opencl/lib/CppUTest/src/MemoryLeakAllocator.cpp
  /__w/fpga-runtime-for-opencl/fpga-runtime-for-opencl/lib/CppUTest/src/MemoryLeakAllocator.cpp: In function 'char* checkedMalloc(size_t)':
  /__w/fpga-runtime-for-opencl/fpga-runtime-for-opencl/lib/CppUTest/src/MemoryLeakAllocator.cpp:34:52: warning: conversion from 'size_t' {aka 'long unsigned int'} to 'unsigned int' may change value [-Wconversion]
     34 |         char* mem = (char*) PlatformSpecificMalloc(size);
        |                                                    ^~~~
  

• lib/CppUTest/src/MemoryLeakDetector.cpp

  [36/113] /usr/bin/g++ -DNOMINMAX -DUT_MALLOC_MACROS_DISABLED -DUT_NEW_MACROS_DISABLED -DUT_NEW_OVERRIDES_DISABLED -I/__w/fpga-runtime-for-opencl/fpga-runtime-for-opencl/lib/CppUTest/include -g -Wall -Wconversion -Wformat -Wformat-security -fno-strict-aliasing -fstack-protector -D_FORTIFY_SOURCE=2 -Og -std=gnu++17 -MD -MT lib/CppUTest/CMakeFiles/CppUTest.dir/src/MemoryLeakDetector.cpp.o -MF lib/CppUTest/CMakeFiles/CppUTest.dir/src/MemoryLeakDetector.cpp.o.d -o lib/CppUTest/CMakeFiles/CppUTest.dir/src/MemoryLeakDetector.cpp.o -c /__w/fpga-runtime-for-opencl/fpga-runtime-for-opencl/lib/CppUTest/src/MemoryLeakDetector.cpp
  /__w/fpga-runtime-for-opencl/fpga-runtime-for-opencl/lib/CppUTest/src/MemoryLeakDetector.cpp: In member function 'int MemoryLeakDetectorTable::hash(char*)':
  /__w/fpga-runtime-for-opencl/fpga-runtime-for-opencl/lib/CppUTest/src/MemoryLeakDetector.cpp:176:34: warning: conversion from 'size_t' {aka 'long unsigned int'} to 'int' may change value [-Wconversion]
    176 |         return ((size_t) memory) % hash_prime;
        |                ~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~
  /__w/fpga-runtime-for-opencl/fpga-runtime-for-opencl/lib/CppUTest/src/MemoryLeakDetector.cpp: In function 'int calculateIntAlignedSize(size_t)':
  /__w/fpga-runtime-for-opencl/fpga-runtime-for-opencl/lib/CppUTest/src/MemoryLeakDetector.cpp:300:53: warning: conversion from 'long unsigned int' to 'int' may change value [-Wconversion]
    300 |         return (sizeof(int) - (size % sizeof(int))) + size;
        |                ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~
  /__w/fpga-runtime-for-opencl/fpga-runtime-for-opencl/lib/CppUTest/src/MemoryLeakDetector.cpp: In member function 'char* MemoryLeakDetector::reallocateMemoryAndExtraInfo(char*, size_t)':
  /__w/fpga-runtime-for-opencl/fpga-runtime-for-opencl/lib/CppUTest/src/MemoryLeakDetector.cpp:322:58: warning: conversion from 'long unsigned int' to 'unsigned int' may change value [-Wconversion]
    321 |         return (char*) PlatformSpecificRealloc(memory, calculateIntAlignedSize(size
        |                                                        ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    322 |                         + memory_corruption_buffer_size) + sizeof(MemoryLeakDetectorNode));
        |                         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  

• lib/CppUTest/src/SimpleString.cpp

  [38/113] /usr/bin/g++ -DNOMINMAX -DUT_MALLOC_MACROS_DISABLED -DUT_NEW_MACROS_DISABLED -DUT_NEW_OVERRIDES_DISABLED -I/__w/fpga-runtime-for-opencl/fpga-runtime-for-opencl/lib/CppUTest/include -g -Wall -Wconversion -Wformat -Wformat-security -fno-strict-aliasing -fstack-protector -D_FORTIFY_SOURCE=2 -Og -std=gnu++17 -MD -MT lib/CppUTest/CMakeFiles/CppUTest.dir/src/SimpleString.cpp.o -MF lib/CppUTest/CMakeFiles/CppUTest.dir/src/SimpleString.cpp.o.d -o lib/CppUTest/CMakeFiles/CppUTest.dir/src/SimpleString.cpp.o -c /__w/fpga-runtime-for-opencl/fpga-runtime-for-opencl/lib/CppUTest/src/SimpleString.cpp
  /__w/fpga-runtime-for-opencl/fpga-runtime-for-opencl/lib/CppUTest/src/SimpleString.cpp: In member function 'void SimpleString::split(const SimpleString&, SimpleStringCollection&) const':
  /__w/fpga-runtime-for-opencl/fpga-runtime-for-opencl/lib/CppUTest/src/SimpleString.cpp:138:31: warning: conversion from 'long int' to 'int' may change value [-Wconversion]
    138 |                 int len = str - prev;
        |                           ~~~~^~~~~~
  

• lib/CppUTest/src/UtestPlatformGcc.cpp

  [45/113] /usr/bin/g++ -DNOMINMAX -DUT_MALLOC_MACROS_DISABLED -DUT_NEW_MACROS_DISABLED -DUT_NEW_OVERRIDES_DISABLED -I/__w/fpga-runtime-for-opencl/fpga-runtime-for-opencl/lib/CppUTest/include -g -Wall -Wconversion -Wformat -Wformat-security -fno-strict-aliasing -fstack-protector -D_FORTIFY_SOURCE=2 -Og -std=gnu++17 -MD -MT lib/CppUTest/CMakeFiles/CppUTest.dir/src/UtestPlatformGcc.cpp.o -MF lib/CppUTest/CMakeFiles/CppUTest.dir/src/UtestPlatformGcc.cpp.o.d -o lib/CppUTest/CMakeFiles/CppUTest.dir/src/UtestPlatformGcc.cpp.o -c /__w/fpga-runtime-for-opencl/fpga-runtime-for-opencl/lib/CppUTest/src/UtestPlatformGcc.cpp
  /__w/fpga-runtime-for-opencl/fpga-runtime-for-opencl/lib/CppUTest/src/UtestPlatformGcc.cpp: In function 'long int TimeInMillisImplementation()':
  /__w/fpga-runtime-for-opencl/fpga-runtime-for-opencl/lib/CppUTest/src/UtestPlatformGcc.cpp:295:47: warning: conversion from '__suseconds_t' {aka 'long int'} to 'double' may change value [-Wconversion]
    295 |         return (tv.tv_sec * 1000) + (long)(tv.tv_usec * 0.001);
        |                                            ~~~^~~~~~~
  /__w/fpga-runtime-for-opencl/fpga-runtime-for-opencl/lib/CppUTest/src/UtestPlatformGcc.cpp: In function 'int PlatformSpecificStrLen(const char*)':
  /__w/fpga-runtime-for-opencl/fpga-runtime-for-opencl/lib/CppUTest/src/UtestPlatformGcc.cpp:337:17: warning: conversion from 'size_t' {aka 'long unsigned int'} to 'int' may change value [-Wconversion]
    337 |    return strlen(str);
        |           ~~~~~~^~~~~