Test classes which I'm going to remove the MPL dependency from: blank,
allocator_utilities, is_xxx and reference_content. I'm also going to change
indirect_traits, but that's tested in the python module.
Have a separate config stage, which by default disables forward
declaration of containers. Also add a test to check that if it is
disabled correctly.
Removed forward declaration of std::pair - since it's almost always
included by `<utility>`.
[SVN r72990]
contains an iomanip header which uses C++0x features that only GCC supports,
causing breakage with ICC and Clang. Also added a test, but I'm not sure how to
set it up to be run by the testing machines.
[SVN r67111]
