Support for searching X-GM-THRID
Create new xgm search key constructor to avoid api breakage
make new xgm method specific to xgmthrid
Merge pull request #89 from bvanosten/master

Support for searching X-GM-THRID
Renamed mailimap_search_key_xgmthrid_new -> mailimap_search_key_new_xgmthrid and removed mailimap_search_key_xgmthrid.
Fixed build on 10.9 / Xcode 5
Quote paths properly
Fixed #86: Fixed build for GnuTLS
Fixed #86: fixed build for GnuTLS
fix deprecated functions
gnutls_handshake_set_timeout added in gnutls 3.1.0

(need to add handshake timeout for previous gnutls versions?)
Merge pull request #91 from rezso/master

fix deprecated functions.