Set to version 3.1

Changed options to allow GNU style options of "--x".
Added ARGV variable for invocation arguments.


[SVN r13124]

tools/build

@@ -1 +1 @@
-Subproject commit 384dd863b2e7d998e7e43a2815176b0a01ca52f3
+Subproject commit 76dcdeff15b53891959479882da80a318216096b