devel/omniORB-4.1: Fix build with Clang 6

corbaOrb.cc:1374:13: error: invalid suffix on literal; C++11 requires a space between literal and identifier [-Wreserved-user-defined-literal]

"-ORBid "ORB_ID_STRING" (standard option)") {}
         ^

http://beefy11.nyi.freebsd.org/data/head-i386-default/p477696_s338122/logs/errors/omniORB41-4.1.7_2.log