Committing changes merged from trunk, most notably optional non-intrusive exception_ptr support for MSVC.

[SVN r70974]

test/Jamfile.v2

@@ -7,7 +7,13 @@
 
 import testing ;
 
-project : requirements <exception-handling>on ;
+project
+  : requirements
+      <link>static
+      <exception-handling>on
+      <source>/boost//exception
+      <define>BOOST_ENABLE_NON_INTRUSIVE_EXCEPTION_PTR
+      ;
 
 #to_string
 
@@ -37,6 +43,7 @@ run current_exception_cast_test.cpp ;
 run no_exceptions_test.cpp : : : <exception-handling>off ;
 run errinfos_test.cpp ;
 run exception_ptr_test.cpp /boost//thread : : : <threading>multi ;
+
 compile-fail exception_fail.cpp ;
 compile-fail throw_exception_fail.cpp ;
 compile-fail error_info_const_fail.cpp ;