Merge branch 'save_ext' into jgrpp

# Conflicts:
#	Makefile.src.in
#	findversion.sh
#	projects/determineversion.vbs
#	src/lang/dutch.txt
#	src/lang/korean.txt
#	src/network/network.cpp
#	src/network/network_client.cpp
#	src/rail.cpp
#	src/rail_cmd.cpp
#	src/saveload/afterload.cpp
#	src/ship_cmd.cpp
#	src/toolbar_gui.cpp
#	src/vehicle.cpp

src/rev.cpp.in

@@ -68,6 +68,13 @@ const char _openttd_revision_hash[] = "!!GITHASH!!";
  */
 const byte _openttd_revision_modified = !!MODIFIED!!;
 
+/**
+ * Indicate whether this is a tagged version.
+ * If this is non-0, then _openttd_revision is the name of the tag,
+ * and the version is likely a beta, release candidate, or real release.
+ */
+const byte _openttd_revision_tagged = !!ISTAG!!;
+
 /**
  * The NewGRF revision of OTTD:
  * bits  meaning.