Cardano Updates

Update command to launch new constitution test

Massive squash commit to filter out worthwhile stuff from.

Combining:
This squashed the commit to remove govAct from inheritance.
more debugging of compileOptions etc.
refactor tx-gen signal setup
exception handle to introspect voting cluster runs
tx-gen bracket exceptions more narrowly
further narrow bracketing
more bracketing
examine Env state more closely
add debug logging to tx-gen script compile
add some logging infrastructure
add log func to Env, unclear
slight refactor of tx-gen script generation
more debug code
more debugging messages
debug output updates
add more debug statements
Drop the LogPrefixT for expediency.
more debug output statements
more debug output for periodic queries
add some flushing for debugging
more debug output
still more debug output

Pre-existing use of walletPreview returns empty funds, triggering
falsely flagging governance actions as having insufficient funds to
cover required deposits in pre-submission tx integrity checks. (Or so it
appears as I'm reading it.)

potential way to launch a workbench shell:
nice -19 make -j250 ERA=coay development-voting-prof WB_PROFILING=time

Update for txsubmission changes. Includes a metric for how long it took
to add TXs to the mempool.

Return Nothing to disable ledgersnapshot instead of retrying.

CHaP bump for node 10.1.3