use as_subscript in function instead of ind2sub
Added benchmark over subscript
make is_vectorizable_indexers detect more cases + define is_contiguous_indexers
add value in is_vectorizable_indexer
prepare function for contiguous optimization
norminv.cpp display less
qualify as_index in function to avoid ambiguity
missing ind2sub includes
fix relative_index for new 0-based usage
fix relative_index tests with new 0-based behaviour
more tests for norminv
is_vectorizable_scalar wrongly considers a relative colon as a scalar
remove unnecessary link flags when building libraries
properly use shared libraries on windows, fix #387
add explicit exports in cephes, fix #145
cephes long double prototypes
make cephes code compile correctly when prototypes are included
remove return by reference in real
workaround for bad GCC 4.4 warning in is_vectorizable_indexer
Fixed and improved timing code:
 - reduced overhead and provided overhead estimates for more precise measurements
 - requires further cleanup and updating of affected code).
Updated and refactored the perform_benchmark() function template.