Allow multiple ethercat busses to exist.
NOT TESTED YET!

Use external libnova instead of locally build.
(Upstream libnova has aberration fix as of Jul 9 2015)

Introduce track command in 3rd order spg.
With this command the spg is set to track the 'track_x' input but will
still honour all limits (v, a, j, x)

Add pin mux setting.

More retries in the same time for vesp commands.

Also module enable code for am335x.

broken)

Add 'channel' fields to trace stream headers of name and value packets.
(channel number must be zero for now)

Simplify vesp.ctrl to get succesfull 'make test'

Small fixes to trace code and trace server.

Add some build flags to make more stuff switchable.
Fix delay setting for rs485 in block_vesp_tty. (prevent hanging serial port).

Use it for block parameters.
Use it for ethercat frames. (non pdo)
Use it for vesp commands.

Add recovery to block_vesp_tty

trace_proxy uses the new functions to select its trace sources.
This allows cascading of proxies.

(Especially on 32bit systems like ARM)

Allow selection of toolchains with --host and --build options in configure.

Console building can be switched on and off.
console_httpd and console_j2000_indi are now built only if all libs are
found.

Getting a working build:
1. run autoconf
2. run ./configure
3. make as usuall

Add and4 variant.
Fix memory allocator alignment, it was to enthousiastic.

Remove azimuth safety block.
Remove now useless dt_azimuth directory.

Add range checkers to take over azimuth position range checks.
Add test for new block.
Remove some more logs from the az_safety block.

This makes testcases more reliable and enables us to find stupid time
calculation mixups.

Use log block for logging DT HW position switches.
Remove hard coded logging from safety block.
Leave the rest of the block intact for now.

It can now be used to make a dump from a trace stream on stdin.
Nice for taking a quick look at traces which were dumped to disk first.