* Expose an admin interface to manipulate the gpstime pause state for manual testing.

 * Check for admin interface commands periodically while waiting for the clock to change.
   * If the clock is paused this could block the admin interface response.

 * Fix the checks in mbuf_probe gap_check to catch this case
 * Add a filter to cps_recv
 * Add an integration test
 * extend fe_simulation to simulate a timing glitch that sets the wrong nano-seconds value

awgtpman: close shmems on exit.

fe_simulation_awg: channels now start at 0 instead of 40000 to work with normal AWG excitation types.

fe_simulated_streams modified to open and close testpoints dyanmically.  A new "AwgGenerator" type copies excitation data from awg to the daq.

 * Bug fixes with the modification code.
 * Merged the modfy/mutate calls into one to keep the api smaller.
 * The mutate dcu option can work completely by random selection or can be given specific channels to add/remove.

 * Allow specification of channels to add/remove when modifying a simulated dcu.

 * removed some unneeded logging and comments in html.

 * A more organized http api
 * The ability to request simulated models to mutate their channel list.
   * Updates the ini files and master file on the fly.
 * Bug fixes with the individual model output to ensure the config crc is set.

 * removed the C++ stream generator application and a support library

 * Changes to make all tests pass again.
 * Bug fix in generator code

 * implemented data buffer per model mode
 * implemented a admin interface
 * bumped go version to 1.15 as that is what is in buster backports
 * Reworked the build to use pkg-config again to auto detection of the include paths and libraries.

 * Change to all go except for shmem buffer access + structure definitions.
 * Done to reduce the amount and complexity of the c/c++/go interface

 * fe_simulated_stream uses shm:// or mbuf:// now as well.

Pass build information to go by way of a package config file.
Build in the source dir and output to the binary dir instead of copying to the build dir.

Does not build yet.

It now accepts all things the fe_multi_stream takes.

 * restructure code so the main logic is in a library.
 * add basic build setup for go
 * renamed the executable as go does not like non test things to end in _test.go

 * Updated cps_xmit/recv, cds_pub_sub, local_dc to work with posix shmem or mbuf
 * Add tests that use posix shmem for daqd, cps_recv/xmit, cds_pub_sub, local_dc

This also allows the use of posix shared memory instead of mbuf if the proper name is passed in.

Consolidated the online and in memory logic in the net_writer into one location, making sure the absolute gps request gets a termination block.

Updated the nds live test to also test doing a in buffer test with absolute gps times.

 * All a debug/helper package to be built.

Adds in 3 new epics variables to the edc.  If selected in the edc ini file they are always available.

 * prefix UPTIME_SECONDS
 * prefix DATA_RATE_KB_PER_S
 * prefix GPS

Their data is also exported in the json debug dump as the following fields:

 * Uptime
 * DataRateKbPerSec
 * Gpstime

The template type int did not match the daqd type '7'.  Update the template parameter so that it is correct.
Moved a common calculation out of a branch where it was being computed in each path.

When uint32 was added to the system, the nds server needed to have some enums and string constants defined to understand requests for uint32 data.

This adds:

 * The ability to parse a _32bit_uint description from the job file.
 * Enums to represent 32bit uint data.
 * Changes to the fe_multi_stream_test to generate some 32bit uint files.

The code had been inserting a dcuid '0' into the output headers, make it just skip the model completely in the output.
Also removed a duplicate function to parse a comma delimited list of integers.

Update the test code to allow specifying specific dcus.
Update local_dc to fail if it cannot determine the model rate.

* Increases the DAQ_TRANSIT_MAX_DCU to 256
* Updates the tests of daqd/nds to run with more dcus and sample more channels
* Fixes a spurious failure in the edcu test to keep tests passing

Casting where needed.
Adding forward declarations.
Adding missing includes.
Const/Volatile corrections.
Adding missing return types.

The test will now run the whole test end to end, instead of pausing for
manual debugging.

Updated the help text and the test to use the correct notifier for the
end/duration of the test (-stop).

Added an 'analyze' mode to mbuf_probe to allow it to dump data in real
time with some basic data extracted.

Extended tests with new synthentic generators to help highlight issues.

It appears that there is a byte swap issue with 16bit ints.  Committing
code before looking into the daqd code.

* Moving a size and data type information from daq/channels.h to
include/daq_data_types.h.
* Extending standalone_edc to use DBR_TIME* to look for late data.
* Updating the stream generators to handle more data types.