tests: collectpads: update my email address

https://bugzilla.gnome.org/show_bug.cgi?id=708416
tests: collectpads: tweak stub _collect to push all buffers

https://bugzilla.gnome.org/show_bug.cgi?id=708416
tests: collectpads: add flushing seek tests

https://bugzilla.gnome.org/show_bug.cgi?id=708416
collectpads: implement flushing seek support

Implement common flushing seek logic in GstCollectPads. Add new
API so that elements can opt-in to using the new logic
(gst_collect_pads_src_event_default) and can extend it
(gst_collect_pads_set_flush_function) to flush any internal
state.

See https://bugzilla.gnome.org/show_bug.cgi?id=706779 and
https://bugzilla.gnome.org/show_bug.cgi?id=706441 for the
background discussion.

API: gst_collect_pads_set_flush_function()
API: gst_collect_pads_src_event_default()

https://bugzilla.gnome.org/show_bug.cgi?id=708416
collectpads: Don't leak seek events
collectpads: Update documentation for flushing seek handling
collectpads: Always send SEEK events to all pads, even if one fails
gst-uninstalled: export gst-plugins-gl DYLD_LIBRARY_PATH

https://bugzilla.gnome.org/show_bug.cgi?id=711488
gst-uninstalled: Also export LD_LIBRARY_PATH for gst-plugins-gl
win32: Update def files
win32: Really update the def files
systemclock: add Since markers for new API
value: Lists with all equal elements are equal to a single value

Otherwise caps containing f={X, X} are not compatible with f=X

https://bugzilla.gnome.org/show_bug.cgi?id=709253
bin: Resync iterator if necessary
baseparse: ensure to preserve upstream timestamps

... rather than have subclass coming up with an internally parsed one.

Fixes https://bugzilla.gnome.org/show_bug.cgi?id=707230
docs: cosmetic since marker fixes
tests: fix GstBus unit test with latest GLib

g_source_remove() works on the default main context, and
we're doing things with a custom context. Fixes warning
with newer GLib versions.
poll: improve debug

So that we can see the return values of functions in the log.
pluginloader: check read/write before closed

first try to read or write on the socket before checking the closed state. This
makes sure we handle all data on the socket before erroring out.
pad: move debug function closer to the enum it debugs