update dependencies makefile to look for gst 1 files
Update dep makefile for libjpeg-turbo
Update GST version numbers. Need to check REQS and PLUG_REQS

Conflicts:
	configure.ac
Remove plugins which were removed/aren't in the built deps currently

TODO: check for new ones/re-add mozilla!!
Fix some things that didn't merge correctly
Fix compilation erro related to NS_LITERAL_STRING for builds with bundled gst
Need to link against libgstvideo for gst_video_overlay in PlatformGDK