hpx cannot be compiled without exceptions
fix Boost to Hpx dependencies
missing incldues in upgrade/downgrade unit tests
strip is necessary in upgrade/downgrade implementation, primitive_of doesn't do it
simd::native / simd::pack are the wrong size when going below a certain level, use native type instead
meta::print feature: add some integer argument to more easily tell which instantiation it's referring to
make hpx link with release variant of Boost libraries regardless of debug/optimized if debug variant is not found. Unsafe, but good enough for Linux.
make upgrade/downgrade compatible with fusion in C++0x mode
change downgrade simd test, cannot necessary build natives of double or int64 on current extension