Please backport r33556 (win32/Makefile.sub: have stdint.h if VC2010. [Bug #5243])
The latest version of Visual C++ has stdint.h, so if building external library that includes stdint.h fails to compile because stdint.h and Makefile.sub produced config.h are conflicted.
So r33556 is required for building Ruby by Visual C++ 2010 and building some extensions (for example tiny-tds.so the tds middleware for SQL Server).
Thanks in advance.