fix version check for Apache2 on HHVM

make composer a dep

allow specifying both hhvm and php as deps and only install what's ne…

…eded

fix missing Authorization headers on Apache

fix rewrites in or to subdirectories

Merge branch 'develop' into master

Merge beta into master :)

Merge pull request #4 from tmaher/master

PHP 5.3.10 and Apache 2.2.22 upgrade