pseudo: various enhancements to integrate with Poky
Pseudo defaults to storing state files in ${prefix}/var/pseudo, we want them in
$(localstatedir) so a quick hack (path-munge.patch) makes pseudo use a data
directory specified with --data, and defaults to pseudo's way if it's not set.
Touching LD_LIBRARY_PATH can confuse the system into running Python against a
staging python library. When these two are sufficiently diverse in version
significant breakage can occur.
HOMEPAGE and LIC_FILES_CHKSUM are handy metadata variables to have defined.
