Merge branch 'add-osgdb-freetype' into 'master'

Package FreeType plugin for OSG in Windows builds (for #4872)

Closes #4872

See merge request OpenMW/openmw!67

CI/before_script.msvc.sh

@@ -609,7 +609,7 @@ printf "OSG 3.4.1-scrawl... "
 	fi
 	add_runtime_dlls "$(pwd)/OSG/bin/"{OpenThreads,zlib,libpng*}${SUFFIX}.dll \
 		"$(pwd)/OSG/bin/osg"{,Animation,DB,FX,GA,Particle,Text,Util,Viewer,Shadow}${SUFFIX}.dll
-	add_osg_dlls "$(pwd)/OSG/bin/osgPlugins-3.4.1/osgdb_"{bmp,dds,jpeg,osg,png,tga}${SUFFIX}.dll
+	add_osg_dlls "$(pwd)/OSG/bin/osgPlugins-3.4.1/osgdb_"{bmp,dds,freetype,jpeg,osg,png,tga}${SUFFIX}.dll
 	add_osg_dlls "$(pwd)/OSG/bin/osgPlugins-3.4.1/osgdb_serializers_osg"{,animation,fx,ga,particle,text,util,viewer,shadow}${SUFFIX}.dll
 	echo Done.
 }