Dependency scanning implementation.

    * jam_src/builtins.c: New builtin SEARCH_FOR_TARGET.

    * jam_src/rules.c
         (bind_explicitly_located_targets): New function.
         (search_for_target): New function.

    * jam_src/make.c (make): Call 'bind_explicitly_located_targets()'
        immediately on entering.

    * jam_src/search.c (call_bind_rule): No longer 'static'.

    * new/builtin.jam (c-scanner.process): Real implementation.

    * test/dependency_test.py: Really test for dependencies.


[SVN r15646]

tools/build

@@ -1 +1 @@
-Subproject commit f1ae04c4a93b9bd2255de8e6924f1810a0d6d09a
+Subproject commit 1c8db11b601b65eb68c42f8a5bf06fa07b1df81b