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]
On Linux, GNU's libstdc++, which is the default stdlib for icc and clang,
cannot parse the <iomanip> header in version 4.5+ (which thankfully neither
compiler advises the use of yet), as it's original C++98-friendly
implementation has been replaced with a gnu++0x implementation.
<boost/detail/iomanip.hpp> is a portable implementation of <iomanip>, providing
boost::detail::setfill, boost::detail::setbase, boost::detail::setw,
boost::detail::setprecision, boost::detail::setiosflags and
boost::detail::resetiosflags.
[SVN r68140]
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]