https://bugzilla.gnome.org/show_bug.cgi?id=670303

Updated GstLevel element to use GValueArray instead of
GstValueList for rms/peak/decay keys attached to element
message.

https://bugzilla.gnome.org/show_bug.cgi?id=670303

Conflicts:
	gst/equalizer/gstiirequalizer.c

commit b5bf0294 moved the if(need_new_coefficients) set_passthrough(equ)
after the if(is_passthrough) return FLOW_OK shortcut, so the passthrough
mode would never get updated even if the coefficients change.

Fixes equalizer-test doing .. nothing.

... and avoid confusing debug message claiming neither present.

Port of the interleave element and its unittests.

https://bugzilla.gnome.org/show_bug.cgi?id=669643

Don't post a (fatal) error message on the bus just because we
failed to query some control. Fixes issue with built-in
Suyin Corp webcam for HP notebook (usbid 064e:e28a) on
OpenSuse 12.1, where querying red/blue balance fails.

https://bugzilla.gnome.org/show_bug.cgi?id=670197

Because vlooback emits 25 - ENOTTY and no EINVAL v4l2src thought it
can't handle this and does not work.

https://bugzilla.gnome.org/show_bug.cgi?id=669455

It's how we roll. Fixes 'ISO C90 forbids mixed declarations and code'
compiler warning.

Find fft headers in uninstalled setup, fix LIBS order.

Conflicts:
	tests/check/elements/flacparse.c

Conflicts:
	ext/taglib/gstapev2mux.cc
	ext/taglib/gstid3v2mux.cc
	ext/taglib/gsttaglibmux.c
	ext/taglib/gsttaglibmux.h