- move SuperFastHash to its own set of files, instead of having this tied to the console.

- replace swapvalues with std::swap globally.
- added some additions to utility code from Raze, mainly to reduce file content differences.
- reduced some unused utilities

src/utility/nodebuilder/nodebuild.cpp

@@ -392,7 +392,7 @@ bool FNodeBuilder::CheckSubsectorOverlappingSegs (uint32_t set, node_t &node, ui
 			{
 				if (Segs[seg2].linedef == -1)
 				{ // Do not put minisegs into a new subsector.
-					swapvalues (seg1, seg2);
+					std::swap (seg1, seg2);
 				}
 				D(Printf(PRINT_LOG, "Need to synthesize a splitter for set %d on seg %d (ov)\n", set, seg2));
 				splitseg = UINT_MAX;