Fix running Perforce commands with -G.
Fix running Perforce commands with -G.

The -G parameter was being passed after the arguments to p4, rather than
right after p4, which is required. This reorders things to pass -G
first.

halvorlu/rbtools,datjwu/rbtools,datjwu/rbtools,reviewboard/rbtools,beol/rbtools,haosdent/rbtools,reviewboard/rbtools,datjwu/rbtools,davidt/rbtools,davidt/rbtools,halvorlu/rbtools,beol/rbtools,haosdent/rbtools,haosdent/rbtools,1tush/rbtools,beol/rbtools,davidt/rbtools,reviewboard/rbtools,halvorlu/rbtools