Imported Upstream version 3.7.7
Merge tag 'development/3.7.7' into raring

Upstream version 3.7.7
Revert "import mercurial patch that fixes typo in plot functions"

This reverts commit e145dca752957b9b0c5fce62150f408f874f04cd, since
it's fixed in upstream
Refresh patches
Launchpad PPA release