function_base.hpp:

  - Use BOOST_WORKAROUND more
  - Borland C++ 5.5 update 2 doesn't support enable_if
  - MSVC 7.0 needs the comparison-with-zero workarounds


[SVN r16636]

libs/function

@@ -1 +1 @@
-Subproject commit c4451e5a64f711c688f8ed2074a3cbcb873baf83
+Subproject commit 535612ec8593a4d8b797e892ca22da00eeb4d389