FreeBSD/ports 603d7df (r467876). MOVED, math Makefile

Upgrade math/rkward-kde4 to 0.7.0b and rename it to math/rkward-kde, because
it is built against KF5 components, and no more specific to KDE4.

Release notes at
https://rkward.kde.org/News#RKWard_0.7.0_-_Split_views.2C_based_on_KF5News
DeltaFile
+0-775math/rkward-kde4/pkg-plist
+697-0math/rkward-kde/pkg-plist
+84-0math/rkward-kde/Makefile
+0-83math/rkward-kde4/Makefile
+0-11math/rkward-kde4/files/patch-rkward_rbackend_FindR.cmake
+0-11math/rkward-kde4/files/patch-rkward_rbackend_rkfrontendtransmitter.cpp
+11-0math/rkward-kde/files/patch-rkward_rbackend_FindR.cmake
+0-7math/rkward-kde4/pkg-descr
+7-0math/rkward-kde/pkg-descr
+0-3math/rkward-kde4/distinfo
+3-0math/rkward-kde/distinfo
+1-1math/Makefile
+1-0MOVED
+804-89113 files

UnifiedSplitRaw