lsh: Added naive strncmp() and added support to display a basic 'help'.
lsh: Adjusted help.
lsh: Added stub for ps function and create function for help command.
config: Added option for SPI support.
Create os_run() to contain the endless loop.
Made hw_init() nad os_start() return ints for their status.
Made fs_init() return an int for its status.
Made chip_init() return an int for its status.
Added missing return.
Made board_init() return an int for its status.
netio: Moved initialization of enc into extra static function.
netio: Added stubs for initializing mmcsd and rf on add-on board.
pins: Renamed spi pin symbols - prefixed with GPIO_.
lzodso: Added pin config.
Prefixed alle pin symbols with GPIO_.
Changed tick rate to 1 ms.
lsh: Created lsh_internal.h to allow sharing lsh_puts() among lsh internal functions.
lsh: Moved ps command into its own source file.
Reactivated global task list.
sched: Enabled use of external task list.