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

	* firmware/include/fpga_regs_common.h,
          fpga/sdr_lib/rx_buffer.v, fpga/toplevel/usrp_std/usrp_std.v,
          host/apps/test_usrp_standard_rx.cc, host/lib/usrp_standard.cc, 
          host/lib/usrp_standard.h: added 8bit samples support
          (enable by using the new mode FPGA_MODE_TRUNC_TO_8BIT)