Updated integral2.m and integral3.m and added quad2d (bug #52074). * /scripts/general/quad2d.m: New function file implementing tiled integration. * integral2.m: Updated to avoid dblquad and make use of quad2d. * integral3.m: Updated to avoid double or triplequad and make use of quad2d. * /scripts/general/module.mk: Add quad2d.m to build system. * /scripts/help/__unimplemented__.m: Removed quad2d from unimplemented list. Changed BIST test which had relied on quad2d being unimplemented. * quad.txi: Updated 2D&3D integration section, added quad2d DOCSTRING. * NEWS: Announce new function quad2d.

--- a/scripts/general/module.mk	Sat Oct 14 18:16:55 2017 -0500
+++ b/scripts/general/module.mk	Sat Oct 14 18:30:51 2017 -0400
@@ -66,6 +66,7 @@
   %reldir%/postpad.m \
   %reldir%/prepad.m \
   %reldir%/publish.m \
+  %reldir%/quad2d.m \
   %reldir%/quadgk.m \
   %reldir%/quadl.m \
   %reldir%/quadv.m \