Add and advertise function to free Ppolyline_t;

add support for elliptical wedges;
make sure new fill types work when user supplies an image

diff --cc lib/common/const.h
index 9a92a1c4e3fd3596fbd8bff6b1c3249c55a5bb0a,0bfb306163b15deb52c4ac9d43166e640429db47..ec4e45fee0b36056c1ca8c77933dc10adb86569b
--- 1/lib/common/const.h
--- 2/lib/common/const.h
+++ b/lib/common/const.h
@@@ -214,7 -214,8 +214,9 @@@
  #define BOX3D (1 << 9)
  #define COMPONENT (1 << 10)
  #define STRIPED (1 << 11)
- #define WEDGED  (1 << 12)
+ #define DOTTED (1 << 12)
+ #define DASHED (1 << 13)
++#define WEDGED  (1 << 14)
  
  /* fill types */
  #define FILL      1