Improve video logging.
Revert "SFR 452681 dumpThreads, not dumpStack"

This reverts commit 5311e89e190efce814abe0799585f2c4ef294749.
Revert "SFR 452618 Speculative fix for frozen video.  Includes more diags.  Ratehr"

This reverts commit d114d16be3528fa3b78427fdc0eaaa1dc79d2a00.

Conflicts:
	src/org/jitsi/impl/neomedia/jmfext/media/protocol/directshow/DirectShowStream.java