Changes to MingW32 between r1 and r2

'''Minimalistic GNU for [Win32]'''

Homepage: http://www.mingw.org/
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From the homepage: ''MinGW'': A collection of freely available and freely distributable Windows specific header files and import libraries combined with GNU toolsets that allow one to produce native Windows programs that do not rely on any 3rd-party C runtime DLLs.

Legend

     Only in r1
     Only in r2
     -->      Modified slightly between r1 and r2