Merge branch 'boost_no_cxx11_sfinae_expr' of https://github.com/glenfe/config into pr114

# Fixed Conflicts:
#	checks/Jamfile.v2
#	checks/test_case.cpp
#	test/all/Jamfile.v2
#	test/config_test.cpp

Also added some more documentation to tie together the various SFINAE macros.  Regenerated the docs.

test/config_info.cpp

@@ -1053,6 +1053,7 @@ void print_boost_macros()
    PRINT_MACRO(BOOST_NO_CXX11_REF_QUALIFIERS);
    PRINT_MACRO(BOOST_NO_CXX11_RVALUE_REFERENCES);
    PRINT_MACRO(BOOST_NO_CXX11_SCOPED_ENUMS);
+   PRINT_MACRO(BOOST_NO_CXX11_SFINAE_EXPR);
    PRINT_MACRO(BOOST_NO_CXX11_SMART_PTR);
    PRINT_MACRO(BOOST_NO_CXX11_STATIC_ASSERT);
    PRINT_MACRO(BOOST_NO_CXX11_STD_ALIGN);
@@ -1151,6 +1152,7 @@ void print_boost_macros()
 
 
 
+
    // END GENERATED BLOCK
 
    PRINT_MACRO(BOOST_INTEL);