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		10 anni fa
..
example.c	5ca28f7928 Import zlib from GCC	10 anni fa
infcover.c	5ca28f7928 Import zlib from GCC	10 anni fa
minigzip.c	5ca28f7928 Import zlib from GCC	10 anni fa