Add enigma2 lirc-input support

works flawlessly, including repeated signals etc. Ported from enigma2 on x86 architecture.
Initscript for lirc still to be done, I also added required lirc-0.9.1 to openembedded-core a moment ago also.
Remotes that shall control enigma2 have to be prefixed with "E2_" as remote name in LIRC, other remote-names will be ignored (people with IR-Transmitters wont want to use every known remote to control enigma2, but record those to be able to send their signals from LIRC with irsend).