X11rdp: pixman upgrade (from 0.15.2 to 0.30.0) to avoid a crash caused
by bad clip.
(when using xfreerdp into X11rdp session)
Revert "X11rdp: pixman upgrade (from 0.15.2 to 0.30.0) to avoid a crash caused by bad clip. (when using xfreerdp into X11rdp session)"

This reverts commit 3087e7c6759ee55859477fa1e37f59d66877af7e.
X11rdp: pixman upgrade which resolve a crash issue caused by bad clip.
(when using xfreerdp into X
Revert "X11rdp: pixman upgrade which resolve a crash issue caused by bad clip. (when using xfreerdp into X"

This reverts commit 873e840a0e4905d412551eb2afb09f04e107dcd9.
X11rdp: pixman upgrade which resolves a crash issue caused by bad clip.
(when using xfreerdp into X11rdp session)
(pixman0.15.2=>0.30.0)