#32 Fix warnings on MinGW

[Mikael]

1. Increase inline function growth limit by adding –param large-function-growth=10000 to CFLAGS.

2. In file replaygain_analysis.c, check if __MINGW32__ is defined, and if so then don’t execute “#pragma warning ( disable : 4305 )”. This is done in 2 places in file.

3. In file utf8.c, cast GetLastError() to int in all places it occurs in fprintf statement.

[Josh Coalson]

1 has performance implications; we don't want to try to outsmart the compiler

2,3 checked in.

thanks!

[Mikael]

Many thanks Josh! Concerning 1, would the performance be lower with it? If so then I will remove it from my build and accept the warnings. Perhaps the warnings could be mensioned in readme file. Thanks again.

[Josh Coalson]

it might be lower; the warnings are annoying though. I plan on doing another round of profiling to see if explicitly inlining so much still yields faster code.