* 32-bit x86 running on 64-bit x86 Windows needs to get SKUSiPolicy.p7b from sysnative.
* Also fix automatic extension switching in file dialog and a small MinGW warning in Bled.
* The ZIP64 extra record may not be the first one, so add processing for all extra zip records.
* Also add extra sanity checks to try to appease Coverity and properly detect short writes.
* This adds ZIP64 support, which is required to extract zip archives that are larger than 4GB.
* Closes#2264
* Also fix a MinGW warning in pki.c and improve the UEFI revocation messages.
Pete Batard