v5.2.7
tuklib_physmem: Fix Unicode builds on Windows.
Bump version and soname for 5.2.7.
Build: Prepare to support Automake's subdir-objects.
xzgrep: Fix compatibility with old shells.
xz: Make --keep accept symlinks, hardlinks, and setuid/setgid/sticky.
Build: Add support for translated man pages using po4a.