Fix mantis 3091 (from Yarn)

Treat non-ASCII chars above unsigned index 127 as word separators when
ending retail style colorisation

git-svn-id: svn://svn.icculus.org/fs2open/trunk/fs2_open@10986 387891d4-d844-0410-90c0-e4c51a9137d3
Fix gcc warning

declaration of ‘brief_line’ shadows a global declaration [-Wshadow]

git-svn-id: svn://svn.icculus.org/fs2open/trunk/fs2_open@10987 387891d4-d844-0410-90c0-e4c51a9137d3