vcl: split painting bitmap functions to bitmappaint.cxx

Change-Id: Ib5f52e4b7b5121de15cdb205165fcbdb8b09bc8a
Reviewed-on: https://gerrit.libreoffice.org/50530Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Tomaž Vajngerl <quikee@gmail.com>

vcl/Library_vcl.mk

@@ -300,8 +300,9 @@ $(eval $(call gb_Library_add_exception_objects,vcl,\
     vcl/source/gdi/wall \
     vcl/source/gdi/scrptrun \
     vcl/source/gdi/CommonSalLayout \
-    vcl/source/bitmap/bitmap \
+	vcl/source/bitmap/bitmap \
     vcl/source/bitmap/bitmapfilter \
+    vcl/source/bitmap/bitmappaint \
     vcl/source/bitmap/bitmapscalesuper \
     vcl/source/bitmap/BitmapScaleConvolution \
     vcl/source/bitmap/BitmapSymmetryCheck \