Refactor code to use zlib in any case: if no compression is enabled, those functions are just a passthrough to the normal stdio
const char*
Support piping to stdout even with zlib
execution permission on build.sh
Update manpage
Progress indicator now works on compressed files as well
cmake downloads and builds zlib
build zlib on windows as well
Merge branch 'origin/master'

Conflicts:
	userspace/libscap/scap_savefile.c
	userspace/sysdig/sysdig.cpp
compiler error