Fix a while loop in Directory::copy function (semicolon removed).
[POSIX] Fix NzFileImpl::copy return value.
Fix warning in Core/Hash/Internal.cpp (with clang).
Merge branch 'master' of https://github.com/danman5555/NazaraEngine into danman5555-master

Conflicts:
	src/Nazara/Core/Hash/SHA/Internal.cpp