Manpages of mingw32-gcc

• i686-w64-mingw32-gcc(1)
• i686-w64-mingw32-gcov-dump(1)
• i686-w64-mingw32-gcov-tool(1)
• i686-w64-mingw32-gcov(1)
• i686-w64-mingw32-lto-dump(1)