src/chip/ad9510.cpp: change ad9510 clock port
src/fmc_config_130m_4ch.cpp: add some Si571 clock frequencies
src/fmc_config_130m_4ch_crystek.cpp: add simple main file to support crustek clock gen
src/fmc_config_130m_4ch_ext_clk_no_pll.cpp: add simple main file to support external clock with no PLL
src/Makefile*: update Makefiles