tlfw: rename .opfw image names to .tlfw
tlfw: use TlFw in firmware info blob inistead of OpFw
tlfw: teach gcs to load .tlfw files as well as .opfw files
gcs devices: add new board ID for revolution

Support rev 2 of Revolution when using the new
board ID range.
openocd: use norst variant of openocd config for revolution
Merge pull request #350 from solidgoldbomb/opfw-to-tlfw

Identify TauLabs firmware files as .tlfw and with TlFw magic in the info blob