Try to deal with macros for frexpl and ldexpl.

The error message for msvc-9.0~wm5~stlport5.2 suggests that frexpl and ldexpl
are macros.

[SVN r53205]

libs/functional

@@ -1 +1 @@
-Subproject commit 6de823b18b7c62351c35a4e2865a17b0f8528609
+Subproject commit 1ccd4616fcb0ef2ce0c06781d8fee60180b8d712