Sem Mulder

Mark more characters as safe when passing build options

6

Right now the characters which are marked as safe [here](https://github.com/inducer/pyopencl/blob/4c0521913881ac6e284b38c9aab79708dfb522db/pyopencl/__init__.py#L392), are not exhaustive. Since we aren't actually passing the build options through a shell, but are invoking functions like `clBuildProgram`,...

This PR adds some more missing build systems.

This PR contains an alternative approach for adding Azure Active Directory authentication support for issue #37. @younux also opened a PR (#52) so we'll have to decide on an approach....

If the `owner` field was left empty in the `postgresql_database` resource the _username_ used to connect was used. This is not entirely correct however, the username can be different than...