[PLUGIN-MOVE] video parsers should be moved to -good

Submitted by Stefan Kost @ensonic

Link to original bug (#616921)

Description

Plus:

• the element uses GST_BOILERPLATE
• the element has docs

Minus:

• there are no tests
• the naming is weired (gst_mp3parse_*, but GstMPEGAudioParse and GstMPEGAudioParseClass) - should the GstMPEGAudioParse be renamed to GstMP3Parse or the other way around. I vote for GstMP3Parse to keep the element name

Also there are no leagal issues around the parser, so it should leave -ugly.

Depends on

• Bug 631200
• Bug 631389
• Bug 631814