Don't link libz explicitly on Windows.

On Windows Qt already includes libz. Since the Qt SDK comes without a separate
libz linking it explicitly fails. Also, if libz is installed via MinGW linking
it explicitly will clash with the libz functions in Qt.



git-svn-id: svn://svn.rockbox.org/rockbox/trunk@29512 a1c6a512-1295-4272-9138-f99709370657
1 file changed