Fix player state for unsupported audio file formats

Player thread now sets its status correctly. Closes #360.
Link dynamic pianobar against gcrypt

Commit 96db841a16670b52fa462337c657c6dc6bd2844a added initialization
functions to the pianobar binary but failed to link the dynamically
linked version against libgcrypt. Closes #362.
Merge remote-tracking branch 'upstream/master'