Fix documentation location

/usr/doc is present in some distros as a symlink but /usr/share/doc is the LSB location. dist_doc_DATA is the proper way to install documentation.
Evaluate Makefile wildcards in source tree

Building from outside the source tree currently breaks because the wildcards are evaluated in the build tree.
Merge branch 'lsb_docs' of git://github.com/chewi/opendias into gentoo.build
Merge branch 'srcdir_wildcards' of git://github.com/chewi/opendias into gentoo.build
allow validation/generation of localised templated from a different directory that the source home