Data/Dialogs/dlgCredits: Fix caption
NEWS: prepare for 6.7.2
po: update French translation
po: update Lithuanian translation
po: update Serbian translation
Dialogs/AlternatesList: don't show dialog if the list is empty

Fixes a crash because AlternatesListWidget::OnAction() accesses the
std::vector beyond its boundary (TRAC #3146).  Usually, the alternates
list is never empty, so this happens rarely.
NEWS: Add feature "one-click task reversal"
InfoBoxes/Content/Task: Use active task data for "Fin Dist" InfoBox

Fixes trac issue #3152.

Unlike other "Fin" infoboxes "Fin Dist" used ordered_task_stats
instead of the active task_stats. This caused conflicting information if
a GOTO task was active (e.g. "Fin ETE" and "Fin Dist" calculation was
based on different turnpoints).
Dialogs/Plane/PlaneDetailsDialog: Increase upper limit for plane wing area

Fixes trac issue #3154.
Form/DigitEntry: correctly handle S latitudes and W longitudes

Fixes trac issue #3155.
Merge branch 'v6.7.x'
Topography/shapelib: remove unused header mapsymbol.h
Topography: upgrade shapelib to 6.4.0
Terrain/RasterMap: move comment to RasterProjection