Fix issue with open_basedir
fix "internal server error"

wp_die()'s default status is 500, showing a default "internal server
error" page from the webserver. status 503 fits and shows the install
instructions.
update to 3.7.1
fix typo / utf8 characters (damaged by patch)
Merge pull request #4 from TrafficPlex/v3.7.1

V3.7.1