tdf#118825 Implement OOXMLMotionPath in exportToSvgD of basegfx.

Powerpoint only allows M,L,C,Z,E,m,l,c,z,e , i.e. V,H,S ( and
their corresponding relative command ) must not be used and
ending E is mandatory. Command and space delimiters also can not
be skipped.

Change-Id: Icad38ec2eed3e49143eb9a03aa56cc178baae99d
Reviewed-on: https://gerrit.libreoffice.org/58848
Tested-by: Jenkins
Reviewed-by: Mark Hung <marklh9@gmail.com>

include/basegfx/polygon/b2dpolypolygontools.hxx

@@ -228,6 +228,12 @@ namespace basegfx
             polygon is kept; this is needed to read odf files.
             If false, pure svg is used; this is needed for svg import.
 
+            @param bOOXMLMotionPath
+            If set to true, export string format that is acceptable for
+            for animation motion path for PowerPoint: always space delimited,
+            never neglect command char, always end with E, and do not export
+            H or V.
+
             @return the generated SVG-D statement (the XML d attribute
             value alone, without any "<path ...>" or "d="...")
          */
@@ -235,7 +241,8 @@ namespace basegfx
             const B2DPolyPolygon& rPolyPoly,
             bool bUseRelativeCoordinates,
             bool bDetectQuadraticBeziers,
-            bool bHandleRelativeNextPointCompatible);
+            bool bHandleRelativeNextPointCompatible,
+            bool bOOXMLMotionPath = false);
 
         // #i76891# Try to remove existing curve segments if they are simply edges
         BASEGFX_DLLPUBLIC B2DPolyPolygon simplifyCurveSegments(const B2DPolyPolygon& rCandidate);