Split basic functionality of setting up a target's variables from declare-local-target to a new rule, declare-basic-target. This helps in setting up intermediate targets of main targets, for example by the test system.

[SVN r21819]

tools/build

@@ -1 +1 @@
-Subproject commit 33ccc4bfd4b4dfbe5c76590a6824f54f9cf14f2e
+Subproject commit 6868fac717f04860b12f1b8bb290cdc4716f2305