just a small tweak.

Lol, take a look at the commits.

* No, i'm not renaming the project to 'pvala'.
* The script you originally wrote is now a a vala program that links against libvala (the same way valac is), and does exactly the same thing.
* An extra "transform" step is introduced, which runs sed on the code to get rid of glib namespacing and to match the headers.
* posixvala code can now link against glib stuff if one needs.
* The link 'posixvala' does what 'vala' does (compiles and executes), whereas 'posixvalac' only compiles (like 'valac').