This value should be bool, not int

Since bool and int have the same size on x86 architectures, this worked for
me, but since they have a different size on ppc64, it caused the test to
fail. See http://marc.info/?l=taglib-devel&m=125291701231305&w=2 for details.

We should store the type in MP4::Item and do some type checking to avoid
mistakes like this...


git-svn-id: svn://anonsvn.kde.org/home/kde/trunk/kdesupport/taglib@1023246 283d02a7-25f6-0310-bc7c-ecb5cbfe19da