SDR++Clean with rtl-sdr no hw-mod 2024.4.2

SDR++ compiled with modded rtl-sdr library https://github.com/Mr-Precise/rtl-sdr
tunes down to 13 mhz or lower.

NEW: experimental SDR++Clean MinGW/GCC/Linux port/build for Windows 7+
NEW: experimental SDR++Clean portable build for *ubuntu 20.04 amd64

Support RTL-SDR: all china / V3 / V4 (not tested)
Support RTL2832U SDR with modified vid/pid in EEPROM (1209/2832)
Other fixes

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Build in MinGW-M/gcc cross-toolchain on Linux for Windows 7+ 64bit
GCC 11.4
mingw-w64 11.0.1
rtaudio 5.2
portaudio2 19.8
volk 3.1.1

SoapySDR 0.8.1-gbb33b2d2 (fixed path)
SoapyRTLSDR 0.3.3-f9964be
SoapyHackRF 0.3.4-6c0c33f
SoapyPlutoSDR 0.2.1-b906b27
SoapyBladeRF 0.4.1-85f6dc5 (maybe)
SoapyAudio 0.1.2-64449f2

airspyhf v1.8.0
airspyone v1.0.12
rtl-sdr v2023.8.25
hackrf v2024.02.1
libad9361-iio 0.3 git
libiio 0.25 2024.2.2
mirisdr-5 git 2024.2.15

• Windows: MinGW build - Vista/7+ 64bit
• macOS: 11+ intel64 / arm64 here
• Raspberry PI: Bullseye arm64 (aarch64) / nightly builds here
• Linux: *Ubuntu / Debian / RPI Bullseye / or nightly builds.