Default drush domain.list should omit http.  #1550
Fixed drush domain htaccess #1550

Accidentally wrote HTTP_POST instead of HTTP_HOST.  Whoops.
WIP in #1550

Still working on acquia cloud commands.  Need to flatten multisites array.
Flattened list of domains  #1550

Our hosting does not differentiate which site is where.  It just needs to know that a list of domains should go to our webroot.

I had been using a single installation's domains list to update acquia's settings.  That would be wrong since each time we added a domain to an installation it would strip out all the installation's multisite brethren's domains.
Merge pull request #2574 from openscholar/1550-drush_domain_qa

1550 drush domain qa