make smart playlist string comparisons case-insensitive
make smart playlist string comparisons case-insensitive

Bring behaviour in line with iTunes by making
smart playlist string comparisons case-insensitive. Based on a patch
from James Burton <burtonjamesr@googlemail.com>.

hyperair/libgpod,neuschaefer/libgpod,neuschaefer/libgpod,neuschaefer/libgpod,hyperair/libgpod,hyperair/libgpod,neuschaefer/libgpod,hyperair/libgpod,hyperair/libgpod,neuschaefer/libgpod