No symbols output for PDBs which only have global symbol information

[jon-turney]

Some PDBs e.g. kernel32.pdb/17D8B8C647E14C1DAF9C6FC206AAAC512 only seem to have global symbol information, and no module symbol information.

Presumably this can be fixed by creating FunctionRecords in getGlobalFunctions, as it did prior to b260f6c.

[luser]

Unfortunately there's something wrong with that code as per #9. I spent some time looking into it but couldn't figure it out. If you've got any ideas I'm all ears. :)