the old debug_assert always ran and tested the expression, which slows
down release builds. wrapping them in #ifndef NDEBUG is clumsy. the new
ASSERT behaves like assert and ENSURE like the old debug_assert. Let's
change any time-critical but not-super-important ENSURE to ASSERT to
speed up release builds. (already done in bits.h and unique_range.h)
This was SVN commit r9362.
major refactor of wfilesystem - remove gotos and workaround for FAT file
times
replace more round_up of constants with Align<>
remove old unused allocators (STL aligned, matrix, some shared_ptr)
move allocator utils into separate headers.
remove lockfree, wterminal
avoid testing __cplusplus
This was SVN commit r9361.
