v5.3.3alpha
Windows: Fix building of resource files when config.h isn't used.
Bump version number for 5.3.3alpha.
Build: Prepare to support Automake's subdir-objects.
xzgrep man page: Document exit statuses.
xz: Try to clarify --memlimit-mt-decompress vs. --memlimit-compress.
Build: Add support for translated man pages using po4a.