Clean compile of asdf_keymaps.c/h and tests
Clean up keymap pointer notation
Reduce number of keymaps to 16, matching number of DIP switches allocated for
keymap selection.
(WARNING: WIP) Gathered Work-in-progress on alternate keymap defs
Exploratory branch. Code is messy and untested.
Examining creating a module for each keymap rather than header file.
* Created test fixture for virtual outputs
* Added virtual output configuration to keymap definitions removed special
actions_send_reset() and actions_send_screenclear() functions, and replaced with
virtual output definitions.
* asdf_actions.c is removed from build.
* asdf_arch_atmega328p.c: added functions to set/clear each real output
* asdf_arch_atmega328p.c: added pulse_delay() function
* asdf_arch_test.c: added mock machinery to emulate outputs, test output
settings, and detect properly and improperly-formed pulses on the outputs.
* asdf_keymaps.c: allocate initialzer array. asdf_keymaps_select_keymap() calls
asdf_virtual_init() with initializer list for the keymap to set up the LEDS and
outputs every time a new keymap is selected.
- asdf_keymaps_select_keymap() function to select a keymap
- asdf_keymaps_select_n_{set|clear} functions to set a bit in keymap number,
to support dip switches.
