Revamp /etc/mail/Makefile:
Revamp /etc/mail/Makefile:

+ Add support for the new SENDMAIL_MC make.conf knob
+ Add the ability to build .cf files from .mc files
+ Generalize map rebuilding
+ Add the ability to rebuild the aliases file
+ Add the ability to stop, start, and restart sendmail

PR:		bin/13759, bin/19897, bin/24397

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase