Some stylistic consistency patches from Dridi Boukelmoune
who made them with Coccinelle.

Thanks!
One may have gcc or other things restricted, so that e.g. only a
specific user and/or group may execute it. Varnish never inherited
the groups of the user that has been specified by "-u". initgroups()
will make sure that varnish gets all supplementary groups.

Submitted by:	Christian Ruppert
Fixes	#1482
Missing paren. Spotted by Alexander Kuznetcov