Update crossdev config and hacks
Also check required binaries files against scripts
Remove .txt extension from copied license files
Don't require license files for libGL and libX11

They are never included in the produced tarball anyway.
Don't use relative paths for $PATH in wrappers
Use correct path for arch bin in wrapper scripts
Copy AUTHORS files from source tarball if exists
Fix automatic library dependency copying
Fix git repo updating
Remove OS-specific sections from README.md files
Fix variable name collision in dependencies code
Mark libthr as a system library (FreeBSD)
Add more log output, fix loading some config files
Add license files for libraries used by arx
Move settings into innoextract, add license maps
Add package config for Arx Libertatis