added zlib as a build dependency on windows
use dozeo zlib fork
removed external zlib dependency to setup internal one
remove dependency on external zlib project
updated dozeo/zlib to exclude artifacts generated by Makefile.gcc
modify commit to x264 that screengrabber depends on to reflect custom fix for windows header change; add check for forgotten submodule update on build dependencies
attempt to remove completely incorrect dependencies
hopefully fixed x264 dependency to use correct github repo and commit
re-added the zlib -> dozeo fork as dependency
removed dependency on external ffmpeg repo
re-added dependency on ffmpeg -> dozeo fork on branch with windows header fix
Merge remote-tracking branch 'origin/dozeo-zlib' into new_build_process
small update on submodules (ffmpeg, x264)