denormal.h: Fixed & updated WDL_DENORMAL_OR_ZERO.
denormal.h: Fixed & updated WDL_DENORMAL_OR_ZERO.

 + Fixed the C++ auto typed WDL_DENORMAL_OR_ZERO() using the address of the
   pointer instead of the pointer itself.
 + Added aggressive versions of WDL_DENORMAL_OR_ZERO.
 + Reverted earlier not really necessary changes (from commits 2232508 and
   b81a91c), so denormal.h is more in line again with the upstream version.

tappleby/hush-vst,tappleby/hush-vst,tappleby/hush-vst,tappleby/hush-vst,tappleby/hush-vst