Merge multiprecision from sandbox.
Configure checks need to verify GMP and MPFR versions.
Fix misplaced use of typename.
Misc minor fixes for VC9.
Try and fix some Clang failures.
Also remove noexcept specifications from cpp_dec_float: calls to lexical_cast deep in the call tree, make it pretty much impossible to analyse by hand.
Fix Intel compile failure
Fix configuration tests to correctly print lib version numbers
Enhance config tests.
Split cpp_int tests into smaller chunks.
Fix missing include
Fix clang failures
Fix for non-C++11 compilers.
Remove usage of deprecated macros
Small optimisation for integer modulus.
Simply enable_if usage in cpp_int_backend: try to fix Intel-11 failures.
Improve test_cpp_int.cpp.
Improve config tests.
Improve testing macros and update test_arithmetic.cpp to use them and offer better error reporting.
Fix for gcc-4.4.x: rvalue reference support in gcc-4.4 isn't good enough for our use cases.
Fix for aliasing bug.
TRy and disable some VC11 warnings.
Tweak docs and regenerate.
Fix doc Jamfile.
Add redirect index.html.
Fix PDF generation.