Remove the PCMREC_PARANOID support since the issues have been identified and fixed...

Remove the PCMREC_PARANOID support since the issues have been identified and fixed however detecting an encoder writing too many samples to a chunk will remain and be enabled in a DEBUG build as an aid for adding encoders. Do some cleanup on the filename queue. Loosen up the control interface where synchronous thread blocking isn't required for pause/stop/resume.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@14918 a1c6a512-1295-4272-9138-f99709370657