Fixes: #151879, #151881, #151882, #151883, #151884, #151886, #151887, #152102, #152247.

Fixes: #151879, #151881, #151882, #151883, #151884, #151886, #151887, #152102, #152247.
Original commit message from CVS:
Fixes: #151879, #151881, #151882, #151883, #151884, #151886,
#151887, #152102, #152247.
* examples/indexing/indexmpeg.c: 64-bit warning fixes.
* examples/seeking/cdparanoia.c: same
* examples/seeking/cdplayer.c: same
* examples/seeking/seek.c: same
* examples/seeking/spider_seek.c: same
* examples/seeking/vorbisfile.c: same
* examples/stats/mp2ogg.c: same
* ext/esd/esdsink.c: (gst_esdsink_class_init),
(gst_esdsink_dispose): Dispose of element properly.
* ext/ivorbis/vorbisfile.c: (gst_ivorbisfile_seek): 64-bit warning
fixes.
* ext/nas/nassink.c: (gst_nassink_class_init),
(gst_nassink_dispose): Dispose of element correctly.
* gst/wavenc/gstwavenc.c: (gst_wavenc_chain): Fix leak.
* sys/ximage/ximagesink.c: (gst_ximagesink_check_xshm_calls),
(gst_ximagesink_ximage_new), (gst_ximagesink_ximage_destroy):
Fix 64-bit warning.
* sys/xvimage/xvimagesink.c: (gst_xvimagesink_check_xshm_calls),
(gst_xvimagesink_xvimage_new), (gst_xvimagesink_xvimage_destroy):
Fix 64-bit warning.