Rename VDB Vector Merge to VDB Vector from Scalar

Internal review found this the least objectionable new name, but it
is up to the TSC if it meets our standards.  Only the label is changed,
I believe I have preserved the internal names properly.

Signed-off-by: jlait <[email protected]>

Author: jmlait

openvdb_houdini/openvdb_houdini/SOP_OpenVDB_Vector_Merge.cc

@@ -192,8 +192,13 @@ Position:\n\
         .setDefault("@name=*.z"));
 
     // Register this operator.
-    hvdb::OpenVDBOpFactory("VDB Vector Merge",
+    hvdb::OpenVDBOpFactory("VDB Vector from Scalar",
         SOP_OpenVDB_Vector_Merge::factory, parms, *table)
+#ifndef SESI_OPENVDB
+        .setInternalName("DW_OpenVDBVectorMerge")
+#else
+        .setInternalName("vdbvectormerge")
+#endif
         .addInput("Scalar VDBs to merge into vector")
         .setObsoleteParms(obsoleteParms)
         .setVerb(SOP_NodeVerb::COOK_INPLACE, []() { return new SOP_OpenVDB_Vector_Merge::Cache; })

pendingchanges/rename_vdbvectormerge_sop.txt

@@ -0,0 +1,4 @@
+Houdini:
+    VDB Vector Merge SOP is now VDB Vector From Scalar SOP to distinguish
+    it from the VDB Merge SOP.   It keeps the same internal name so this
+    is merely a label change.