Revise TclNREvalObjv so that pre-resolution of the Command by a caller
does not force suppression of exception handling.  Let those be separable
demands.  Aim is to bring TclObjInvoke*() into the fold.
Use the double-secret iPtr->lookupNsPtr field to get post-enter-trace
re-resolutions of commands done in the right context for oo forwards.
added some test cases, based on bug report
merge trunk
New internal routine TclNRInvoke() - NR-enabled path through the machinery
behind invokehidden commands.
More revisions let multi-interp test case work, but at cost of panics
and segfaults.  Pushing the NRE-envelope.
More progress.  NR-enable [interp] and [$slave], completely with
invokehidden subcommand.  Test suite passes with no errors.
merge trunk
Branch for rewriting TclCompileScript() and related routines, with the
intent to generally simplify and make more readable, as well as find and
eliminate duplication with ensemble machinery and improve mergeability
to other branches.  Work in Progress.  Doesn't work at all right now.
merge trunk
Nearly functional now, but leaky and not yet as tidy as I'm hoping for.
merge trunk
A few bug fixes from failing tests; still leaky.
Fix bytecode ranges in the cmdMapPtr.  still leaky.
merge trunk
merge trunk
plug memory leaks
merge trunk
Stop the compileProc routines leaving behind error messages in interp.
(Nicer way to solve [Bug 20a81392ec].)  Make simplifications in 
TclCompileScript() make possible by the new structure.  Still a work
in progress.
More elimination of error message litter to fix [Bug 20a81392ec].