examples/switch/switcher.c (my_bus_callback, switch_timer, last_message_received...

examples/switch/switcher.c (my_bus_callback, switch_timer, last_message_received, main): gst/switch/gstswitch.c (gst_...

Original commit message from CVS:
* examples/switch/switcher.c (my_bus_callback, switch_timer,
last_message_received, main):
* gst/switch/gstswitch.c (gst_switch_release_pad,
gst_switch_request_new_pad, gst_switch_chain, gst_switch_event,
gst_switch_set_property, gst_switch_get_property,
gst_switch_get_linked_pad, gst_switch_getcaps,
gst_switch_bufferalloc, gst_switch_dispose, gst_switch_init):
* gst/switch/gstswitch.h (switch_mutex, GST_SWITCH_LOCK,
GST_SWITCH_UNLOCK):
Add an extra lock to protect against certain variables instead of
using the object lock. Fix case where caps are different in the
sink pads causes deadlock. Update example to use different caps
on each sink pad.