mc: various makefile/compile time changes
- add & reorder new compile time options with help text
- all options are disabled by default, to reduce space req.
- remove invalid mc configure options
- fix broken makefile logic to enable/disable mc options

Signed-off-by: Dirk Brenken <dibdot@gmail.com>
Merge pull request #545 from dibdot/master

mc: various makefile/compile time changes