Extracting files to a Windows PE in-memory filesystem no longer fails if
the target files do not yet exist.
- Made more improvements to compression and decompression. Most notable
- is about 10% faster XPRESS compression with a tiny improvement in
- compression ratio.
+ Improved the performance of XPRESS compression and LZMS decompression.
Removed the --with-imagex-progname and --enable-more-assertions
configure options.