Merge branch 'dd/time-reentrancy'

Avoid gmtime() and localtime() and prefer their reentrant counterparts. * dd/time-reentrancy: mingw: use {gm,local}time_s as backend for {gm,local}time_r archive-zip.c: switch to reentrant localtime_r date.c: switch to reentrant {gm,local}time_r