test_images tests now pass

--HG--
branch : compat_win
Updated tests generation to cope with win32's separator

--HG--
branch : compat_win
Fixed make_filename_hash on windows

--HG--
branch : compat_win
Merge with compat_win
Fixed @import for sprite-maps.

--HG--
branch : import_sprite
extra : amend_source : 827ba5ccd5408ded9faaf329c6d4c52304f96a98