gst/equalizer/gstiirequalizer.c: Rename "values" property to "band-values" and change...

gst/equalizer/gstiirequalizer.c: Rename "values" property to "band-values" and change type into a

Original commit message from CVS:
* gst/equalizer/gstiirequalizer.c: (gst_iir_equalizer_class_init),
(gst_iir_equalizer_set_property), (gst_iir_equalizer_get_property),
(gst_iir_equalizer_filter_inplace):
Rename "values" property to "band-values" and change type into a
GValueArray, so it's more easily bindable and the range of the
values passed in is defined and checked etc.; also do some
locking.