Moved every command into a separate file.

tool/Makefile.am

tool/MasterDevice.cpp

tool/MasterDevice.h

tool/cmd_alias.cpp

tool/cmd_data.cpp

tool/cmd_debug.cpp

tool/cmd_domain.cpp

tool/cmd_master.cpp

tool/cmd_pdos.cpp

tool/cmd_sdo_download.cpp

tool/cmd_sdo_upload.cpp

tool/cmd_sdos.cpp

tool/cmd_sii_read.cpp

tool/cmd_sii_write.cpp

tool/cmd_slaves.cpp

tool/cmd_states.cpp

tool/cmd_xml.cpp

tool/coe_datatypes.cpp

tool/coe_datatypes.h

tool/globals.h