try to adjust the timer to be ok with the horrible 10000 microsecond kernel resolution on amazon ec3 but that doesn't mean it's not horribly wrong to run the kernel that slow

freetdm: ftmod_r2 - use openr2 API extension to properly report incoming restricted ANI and restrict ANI on outgoing calls

change switch_strip_spaces to specify if you want it to dup the string or destroy the current buffer

         Added new channel command FTDM_COMMAND_SET_POLARITY
         ftmod_wanpipe - Added support to enqueue polarity events on FXO lines
	 ftmod_wanpipe - Added support to set polarity on FXS lines
	 ftmod_analog - Added support to answer and hangup FXO lines on polarity reverse
	 ftmod_analog - Added support to reverse polarity in the FXS line on answer and hangup
	 mod_freetdm - Added parameters answer-on-polarity, hangup-on-polarity and polarity-delay
                       to enable those analog features

         ftmod_r2 - updated api help and removed references to threads per channel,
                    not used anymore