implement the variant config option so deens works

update OCamlMakefile to latest

Fix the build

more conversions to the new printing format for MPL

convert more of the MPL OCaml output to the new printer util

swap over the MPL printing output to a more succinct printer utilities, and begin to convert it over to use the newer functions

move the hgignore file over to git format

Merged and sanitized Cygwin check.

Add termios check to catch build failure on Cygwin

Merge with Anil's latest changes.

Merge with Anil's latest changes.

Fix libs dependencies on tools by exporting MPL/SPL targets. Add

Build fixes for Linux; minor cleanup. Running configure should not be required now for a build.

update config regression test to show the results of a command line override

fix command line parsing overrides when defaults are present. Now defaults are added first at lowest priority, then config files are parsed, then command line overrides are applied last so they have highest priority