Inston_Thermo_i2: Convert Poll_Status to an Internal Sub, Replace with Request_Status

This more closely matches what the user would expect
Insteon_Thermo_i2: Add Request_status Routine
Merge branch 'master' into insteon_thermo_i2

Conflicts:
	lib/Insteon.pm
	lib/Insteon/BaseInsteon.pm
	lib/Insteon_PLM.pm
Merge branch 'insteon_thermo_i2' into running

Conflicts:
	lib/Insteon/BaseInsteon.pm
	lib/Insteon_PLM.pm