ext/libvisual/visual.c: Fix the fps calculations.

ext/libvisual/visual.c: Fix the fps calculations.

Original commit message from CVS:
* ext/libvisual/visual.c: (gst_visual_chain):
Fix the fps calculations.

* gst/ffmpegcolorspace/avcodec.h:
Move structure element for clarity

* gst-libs/gst/interfaces/tunernorm.c: (gst_tuner_norm_init):
* gst-libs/gst/interfaces/tunernorm.h:
* sys/v4l/gstv4ljpegsrc.c: (gst_v4ljpegsrc_src_link):
* sys/v4l/gstv4lmjpegsink.c: (gst_v4lmjpegsink_base_init):
* sys/v4l/gstv4lmjpegsrc.c: (gst_v4lmjpegsrc_base_init),
(gst_v4lmjpegsrc_get_fps), (gst_v4lmjpegsrc_src_convert),
(gst_v4lmjpegsrc_src_query), (gst_v4lmjpegsrc_get),
(gst_v4lmjpegsrc_getcaps):
* sys/v4l/gstv4lsrc.c: (gst_v4lsrc_fixate), (gst_v4lsrc_get_caps),
(gst_v4lsrc_set_caps):
* sys/v4l/gstv4lsrc.h:
* sys/v4l/v4l_calls.c: (gst_v4l_open):
* sys/v4l/v4lsrc_calls.c: (gst_v4lsrc_get_fps),
(gst_v4lsrc_get_fps_list), (gst_v4lsrc_buffer_new):
* sys/v4l/v4lsrc_calls.h:
Fractional framerates...