basegfx: consistently use "" and <> in include directives

Change-Id: I6e4e11532e634fbdb8c6bfd4ce3577fc2746aca8
Reviewed-on: https://gerrit.libreoffice.org/43300Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Mike Kaganski <mike.kaganski@collabora.com>

basegfx/source/workbench/bezierclip.cxx

@@ -24,8 +24,8 @@
 
 #include <math.h>
 
-#include "bezierclip.hxx"
-#include "gauss.hxx"
+#include <bezierclip.hxx>
+#include <gauss.hxx>
 
 // what to test
 #define WITH_ASSERTIONS

basegfx/source/workbench/convexhull.cxx

@@ -20,7 +20,7 @@
 #include <algorithm>
 #include <vector>
 
-#include "bezierclip.hxx"
+#include <bezierclip.hxx>
 
 /* Implements the theta function from Sedgewick: Algorithms in XXX, chapter 24 */
 template <class PointType> double theta( const PointType& p1, const PointType& p2 )