conpaas: clean rollback when mysql or xtreemfs services startup fails.
conpaas: add a recall in the comment that the script is generated.
conpaas: faster disk image file creation.
conpaas: more robust grub-install ensuring that the msdos partition Grub module is installed.
conpaas: add a missing dependency in disk image required for the git-push-hook used by the PHP service.
conpaas: fixed a bug that prevented from uploading code through Git for the PHP service. Added a test case to detect any future regression.
conpaas: removed prefix check for uploaded code identifier because git uploaded code identifiers do not have it.