aggregator: forward gap event information to gap buffer

When the GAP event was flagged with MISSING_DATA, subclasses
may want to adopt a different behaviour, for example by repeating
the last buffer.

As we turn these gap events into gap buffers, we need to flag
those with an equivalent flag, CORRUPTED seems like a decent
match.
35 jobs for !708 with agg-forward-gap-info in 1 minute and 22 seconds (queued for 1 minute and 17 seconds)
latest detached
Status Job ID Name Coverage
  Build Docker
passed #5825358
alpine amd64 manifest builder docker

00:00:26

passed #5825357
android docker

00:00:17

passed #5825356
cerbero fedora amd64 docker

00:00:22

passed #5825355
fedora amd64 docker

00:00:35

passed #5825359
gst-indent amd64 docker

00:00:31

 
  Preparation
passed #5825361
gst indent

00:00:21

manual #5825360
manual
manifest
 
  Build
created #5825370
gstreamer
build cerbero cross-android universal
created #5825374
gst-ios-13.2
build cerbero cross-ios universal
created #5825371
gstreamer
build cerbero cross win32
created #5825372
gstreamer
build cerbero cross win64
created #5825369
gstreamer
build cerbero fedora x86_64
created #5825373
gst-macos-10.15
build cerbero macos x86_64
created #5825375
1809 gstreamer-windows windows docker
build cerbero msvc x86_64
created #5825365
build clang fedora x86_64
created #5825368
1809 windows docker allowed to fail manual
build msys2
created #5825362
build nodebug fedora x86_64
created #5825363
build static fedora x86_64
created #5825364
build static nodebug fedora x86_64
created #5825366
1809 windows docker
build vs2017 amd64
created #5825367
1809 windows docker
build vs2017 x86
 
  Test
created #5825376
gstreamer
check fedora
created #5825377
gstreamer
integration testsuites fedora 1/4
created #5825378
gstreamer
integration testsuites fedora 2/4
created #5825379
gstreamer
integration testsuites fedora 3/4
created #5825380
gstreamer
integration testsuites fedora 4/4
created #5825385
gstreamer
valgrind bad
created #5825382
gstreamer
valgrind base
created #5825381
gstreamer
valgrind core
created #5825386
gstreamer
valgrind ges
created #5825383
gstreamer
valgrind good
created #5825384
gstreamer
valgrind ugly
 
  Integrate
created #5825387
cross-android universal examples
created #5825389
gst-ios-13.2
cross-ios universal examples
created #5825388
documentation