Add module code in controller_module
Introduce new test for module
Use module in azimuth and elevation simulators
Remove dedicated simulator blocks

It was already enabled in the ethercat code, but that changed.

Cleaning only the block directory is not enough, there might be (and are) more.

	modified:   common/log/log.c

dev->tx_pdo_watchdog == true.
Manually setting dev->tx_pdo_watchdog to false in individual blocks now allows
the outputs of the blocks to remain active when the control loop is stopped.
(We need this before we can safely connect our mains supply relays to Ethercat
outputs..)

Fix time code to properly recognize invallid combinations and return -1
Add new lowest common multiple calculation.
(Subsample number now has a maximum of 10000, but this is an arbitrary limit)
Add code to add frequency domain to .dot dump files.

Yesterday's fix was wrong. The variable 't' wasn't missing, but it was a
misspelling of 'tn'.

	modified:   controller/trigger/trigger_prestart.c

one recipe to be specified per target. When multiple recipes are defined for
the same target, only the last one will be executed.
This change makes executing the 'all' target in the controller/ or
controller/block/ directory actually only build files inside these directories
instead of starting a full build at the top level directory.

Making 'clean' in either of these directories still cleans the entire build
starting from the top level directory. I think this eventually deserves a
second commit. I would like to be able to only 'clean' a subdirectory.

	modified:   controller/Makefile
	modified:   controller/block/Makefile

	modified:   Makefile

actually work again after the introduction of the BLOCK_CREATE() macro.

	modified:   controller/ec/block_beckhoff_el4xxx.c

(Only worked if actuall number of slaves was also 0, not for any other number)

Add realloc function to controller_mem
Move reallocs in blocks to new controller_mem functions
Add test case for block_state_machine.

	modified:   controller/dt_ctrl.c

o Add include for 'controller_time.h' for the definition of the
  controller_time_process() function.
o Make it more clear that we want the function to return 0 on success.

	modified:   controller/trigger/trigger_prestart.c

Add missing 't' variable when compiling on FreeBSD.

	modified:   Makefile

Remove test now that commit mails are working.

	modified:   Makefile

Commit mail test.

	modified:   Makefile

Commit mail test.

	modified:   Makefile

Commit mail test.

	modified:   Makefile

Commit mail test.

	modified:   Makefile

Commit email test.

	modified:   Makefile

Test commit.

	modified:   Makefile

Test commit to test commit emails.

	modified:   Makefile

Test commit emails.

 Changes to be committed:
	modified:   Makefile

Add a space to test commit emails.

Add controller_mem memory allocation functions.
All periodic data will be allocated in a continuous piece of memory hoping
for optimall cache behaviour with regards to associativity.
(TODO: really allocate continuous memory at the other side of the MMU)

Optimize some nsec calculations away.

Triggers are now loaded like blocks
Still needs work to cleanup timespec stuff.

Fix some remaining parameter arguments
Add argument checking to il2c generated blocks.

Als add parameter description and check to parameter lists.

(small parser errors due to missing punctuation)

Blocks can now check the number of arguments before parsing them.

Move some more time related stuff to controller_time
Add code to handle skipped samples.

Small fixes to trace code.

The frequency keyword has been removed.
The blocks keyword now needs two arguments: frequency (Hz) and delay (seconds)