The -c option tells the script to stop/start memcache.
I also did a tiny bit of cleanup regarding the -? option.
- Cleaned up stuff around the "-?" flag.
Added -c flag to stop/start memcache before/after running the tests.
Fixes the -m option that was broken by the last commit.
The last commit inadvertently caused the -m option to require an
argument, which it does not actually need to do.