Bugfix from Michael Stevens: when directory names contained regex

metacharacters, Boost.Build misbehaved.

* new/path.jam
  (all-parents): Don't use regex to strip path prefix, use a more robust
    approach.

* test/bad_dirname.py: New test.


[SVN r18576]

tools/build

@@ -1 +1 @@
-Subproject commit d9d8785236a29b5c87eec0cbc9fc3dd9a5cdaefc
+Subproject commit a87f41243cf75c1fb6e221277c6ee2be0909461c