[Vala] svn vala doesnot build from 0.1.5

[pancake <pancake youterm com>]

I have downloaded the latest release 0.1.5 and fetched the SVN head
resulting into a build failure coz an invalid number of arguments
for a gee_ function..

I understand this break as native (API/ABI/ACI? :P), should these kind
of internal changes force a release. Theorically these kind of ACI
breakage must derive into a release?

Or maybe a "nightly-tarball" with .c/.h files?