forked from boostorg/smart_ptr
* Use msync or se_isync as appropriate for CodeWarrior PPC
* Un-obsolete sp_counted_base_cw_ppc
* Remove untested VLE_ON branch
* Use the supported compiler intrinsic __sync(); instead of msync asm
* Revert "Use the supported compiler intrinsic __sync(); instead of msync asm"
This reverts commit 9b92ea28f0
.