MFC revisions 294860,294862,294892-294893,294922

r294860: Add keep_tite configuration option
r294862: Bump copyrights
r294892: Remove unused function prototype
r294893: Fix a crash if -D' is used without -t title'
r294922: Fix fatal warn when compiling under GCC 5.2.0

Approved by: re (marius)