removing old vignette file
setting up C interface
argument validation for C fun in place
added a helper testing functions
validation for matchcall working
can now retrieve function

Also added the match.call code from main/unique.c for
reference; will be removed later but just easier to
check logic, etc.
Changed parent.offset to n, and doc updates

* Adding examples to clarify difference between match.call and match_call
* using `n` instead of `parent.offset` so it harmonizes with `sys.parent`
Cleaned up vignette
Merge remote-tracking branch 'origin/development' into development
fixed test for change from par.offset to n
dots now expanded
Re-calling 'match.call' strategy in place, but still in progress

Gave up on trying to re-create 'match.call' and instead just
capturing dots and installing 'match.call' in order to eval;
everything seems to work, except the actual eval that returns
TRUE instead of anything meaningful, but may be just a function
of the test we're using
whitespace
simplest match_call() example now working properly
added DEVNOTES
now actually modifying result of match.call

Before we were basically just returning it, we are
now applying the various dots options we have
benchmark updates
more benchmark updates
minor comment update
added the tests that match.call breaks under