Add missing BOOST_FORCEINLINE for direct element access
refactoring script complete, needs testing and implementing macros correctly
symeig ulp change
avx shufle specialization corresponding to _mm256_unpack_lo/hi added  #844
Merge pull request #843 from jtlap/symeig_ulp

symeig.cpp ulp change from 10 to15
allow to overloading of NT2_VERSION_STRING

useful when building from tarball
Merge pull request #845 from xantares/patch-1

allow overloading of NT2_VERSION_STRING
Forward hierarchy_of_t in nt2
Made as_size independant of dispatch
Fix usage of as_size in deltac/deltaf