config.h with TLC5916_USE_SPI and TEST_ON_LAUNCHPAD defines added;
 - GPIO define refresh for end equipment
 - Grace makes nOE high by default
 - launchpad.cfg excluded
Layout added as comment
launchpad.cfg and main.cfg for test and end equipment;
only GPIO direction changes
comment for current added
tlc5916_write_leds(const void* states, ...);
parameter is const
first test done