nnesse/minwin-binutils-gdb: binutils with an experimental "minwin64" target for building windows EXE's without a microsoft C library runtime dependency

H.J. Lu 5ca28f7928 Import zlib from GCC		9 lat temu
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example.c	5ca28f7928 Import zlib from GCC	9 lat temu
infcover.c	5ca28f7928 Import zlib from GCC	9 lat temu
minigzip.c	5ca28f7928 Import zlib from GCC	9 lat temu