2005-08-25  Martin Dudok van Heel  <nldudok1 at olifantasia.com>

	* src/usrp.py, src/usrp1.i, src/usrp1_source_base.cc, 
          src/usrp1_source_base.h, src/usrp1_source_c.cc, 
          src/usrp1_source_s.cc: added 8bit samples support
          (enable by using the new mode usrp.FPGA_MODE_TRUNC_TO_8BIT)