Added xp_dl.c, required for syncterm msvc6 build. Should this be in the single-

threaded project too?

src/xpdev/xpdev_mt.dsp

@@ -134,6 +134,10 @@ SOURCE=.\threadwrap.c
 # End Source File
 # Begin Source File
 
+SOURCE=.\xp_dl.c
+# End Source File
+# Begin Source File
+
 SOURCE=.\xpdatetime.c
 # End Source File
 # Begin Source File