wdlendian.h: Added in-place wrapper macros.
wdlendian.h: Added in-place wrapper macros.

Added wrappers that convert a variable in-place, e.g.:

int i = 12345;
WDL_HTOBE32(i); // i = WDL_htobe32(i)

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