Automatic update of common submodule

From 1a07da9 to fe1672e
playbin: improve autoplug_query_caps return

Makes autoplug_query_caps return
downstream_caps + intersect_first(filter_caps, element_caps)

https://bugzilla.gnome.org/show_bug.cgi?id=724828
Automatic update of common submodule

From fe1672e to bcb1518
.gitignore: Ignore gcov intermediate files

https://bugzilla.gnome.org/show_bug.cgi?id=725479
docs: Fix argument and annotation typos

 * colorbalance: Fix misspelled annotation
 * rtsp: Replace incorrectly documented function argument
 * sdp: Escape @ character to avoid gtk-doc warning
 * video-*: Add missing annotation colon
 * videodecoder/video-color: Fix function argument typos
 * videoutils: Remove unknown annotation field

Fixes https://bugzilla.gnome.org/show_bug.cgi?id=725521
docs: Add annotations for return values

Rephrase and clarify some return value descriptions

Fixes https://bugzilla.gnome.org/show_bug.cgi?id=725521
videoformat: Remove duplicate/incorrect section

Fixes https://bugzilla.gnome.org/show_bug.cgi?id=725521
rtspconnection: Call closed() when GET is closed in tunneled mode

This patch adds read source on the write socket in tunneled
mode and we get a callback when client disconnects the GET
channel.

Fixes https://bugzilla.gnome.org/show_bug.cgi?id=725313