Bugfix: recognize a.so.1.2 as file of type SHARED_LIB.

Thanks to Peter Schoen for bug report.

* new/type.jam
  (type): Accept filename, not just suffix. Improve logic.


[SVN r20036]

tools/build

@@ -1 +1 @@
-Subproject commit 3507b3eb642c7a41498218997d1818da677f72e6
+Subproject commit d97aec24f55747b1e6f019d6c5b81e27d335611c