targets are specified as sources, not only as dependency properties.
* new/virtual-target.jam (subvariant-dg): Note which sources
are roots of dependency grapgs and record those graphs.
[SVN r16095]
* 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]
For example, this would allow compilers to add generated headers into include
path.
* virtual-target.jam (action.adjust-properties): New rule.
(clone-action-template): Don't slice cloned object.
* generators.jam (generator.action-class): New rule, to allow
overriding action class on per-generator basis.
* builtin.jam (compile-action): New class.
(C-compiling-generator): New class.
* gcc.jam: Use C-compiling-generator for gcc. Honor includes.
[SVN r15618]
