[vim] VCL syntax highlighting in varnishtest files
[vim] Re-enable cursor/pgUp/pgDown keys

I'm now converted to using hjkl most of the time, and disabling the
cursor keys makes pairing difficult.
[vim] vcl-vim-plugin for VCL syntax higlighting
[git] Use 'current' as default push method

Use 'current' as the default push method to maintain compatibility with
older versions of Git.

Versions prior to 1.7.11 don't support the 'simple' method[1].

[1]:
http://git-core.googlecode.com/git/Documentation/RelNotes/1.7.11.txt