Imported Upstream version 3.7.6
Merge tag 'development/3.7.6' into raring

Upstream version 3.7.6
Update und remove unneeded patches
Update copyright, libcruft was moved to liboctave/cruft
replace deprecated command
Update fltk dependency
Launchpad PPA release
Launchpad PPA release
Launchpad PPA release
import mercurial patch that fixes typo in plot functions
Launchpad PPA release
Launchpad PPA release
Launchpad PPA release