[flac-dev] New release

[Janne Hyvärinen]

I tested MSYS + MinGW-w64 with GCC 4.9.2 and both 32-bit and 64-bit 
versions build without issues.
MSVC 2013 Community version builds 32-bit and 64-bit release and debug 
versions without trouble. I don't have older Visual Studios installed 
but can make a virtual machine to test if lvqcl or someone else doesn't 
have any either.

I have one related suggestion. The Windows solution files should be 
renamed. Right now the old solution file that one is supposed to use on 
old MSVC versions is called FLAC.sln and the new one is called 
FLAC-vs2010.sln. I'd like the main file FLAC.sln to be the one that 
works with all the latest Visual Studios and the old legacy format one 
be called FLAC-vs2005.sln.