Automatic update of common submodule

From 6b03ba7 to 7412249
bluez: Fix compilation on big endian systems
applemedia: avfvideosrc is not ported to 1.0 yet
configure: Fix iOS check for eglglessink
eglglessink: Port iOS part to 1.0
iosassetsrc: Add new element from the GStreamer SDK project
iosassetsrc: Port to 1.0 and fix some bugs on the way
tsdemux: fix buffer overflow

This can happen with a corrupt TS file, found with breakmydata element
plugged before tsdemux.

https://bugzilla.gnome.org/show_bug.cgi?id=708161
mpegtspacketizer: rework TS packet sync and extraction

The previous code could enter an infinite loop because the adapter state
could get out of sync with its mapped data state after sync was lost.
The code was pretty confusing so it's been rewritten to be clearer.

The easiest way to reproduce the infinite loop is to use the breakmydata
element before tsdemux to trigger a resync.

https://bugzilla.gnome.org/show_bug.cgi?id=708161
mpegtsparse: Queue buffers until we have enough to know the caps

https://bugzilla.gnome.org/show_bug.cgi?id=708222
hlsdemux: Fix dereferencing of NULL pointer

On some live HLS streams, gst_hls_demux_switch_playlist causes
assertion failures because it tried to dereference a NULL fragment.
This is because g_queue_peek_tail sometimes was returning NULL and
this case was not being checked.

This patch does two things:
* move the g_queue_peek_tail inside the semaphore protection
* check if q_queue_peek_tail returns NULL

https://bugzilla.gnome.org/show_bug.cgi?id=708849
Add gstreamer-mpegts pkg-config file.

https://bugzilla.gnome.org/show_bug.cgi?id=709145
h264parse: Fix conversion to AVC if a SPS/PPS not from the first indizes is used

https://bugzilla.gnome.org/show_bug.cgi?id=707974
hlsdemux: Do not call _stop holding the updates lock

It will cause a deadlock and the calers for _get_next_fragment
will already call _stop if required when _get_next_fragment fails.

Fixes #690148
egl: Allow disabling gstreamer-egl library

https://bugzilla.gnome.org/show_bug.cgi?id=709531
configure: Make sure to try window-system-agnostic EGL if nothing was auto-detected
speed: Fix some bytes-per-frame vs. bytes-per-sample mixups

Otherwise we will crash when handling multiple channels and
miscalculate timestamps.

https://bugzilla.gnome.org/show_bug.cgi?id=709734
gstamchybris: temporarily disabling support for platform-api

Usage of platform-api is not stable enough yet with MIR, generating all
sorts of weird crashes (heap corruption, mutex issues, etc). We can
enable it again once the issues are fixes with MIR.

Signed-off-by: Ricardo Salveti de Araujo <ricardo.salveti@canonical.com>
Merge pull request #1 from rsalveti/disable-plat-api-support

gstamchybris: temporarily disabling support for platform-api
pitch: Fix inverted condition in setcaps