Add support for lock/unlock commands
Cosmetics: reorder constant definitions
Make xbmc_version a global variable
Add support for GUI notifications
Fix processing of voice commands heard after unlock command
Lock command has to be the only command heard in order to be effective
Add missing -n switch to usage message
Add missing -D parameter to usage message
Add -l command line switch to disable locking/unlocking
Include pocketsphinx version requirements and locking/unlocking instructions in README.md
Add support for CONTEXT action
Add support for commands allowing direct access to specific XBMC windows