options: don't run furious when we have custom options
options: don't run furious when we have custom options

If custom_options were set by GetQueryOptions(), don't run the experiment
framework. We don't want experiments to be contaminated with unexpected
settings.

pagespeed/ngx_pagespeed,wanrui/ngx_pagespeed,0x0mar/ngx_pagespeed,digideskio/ngx_pagespeed,digideskio/ngx_pagespeed,0x0mar/ngx_pagespeed,wanrui/ngx_pagespeed,pagespeed/ngx_pagespeed