utils: renamed md5sum.c to hashcsum.c
xml: added hash sha1/md5 algorithm parameter
xml: utils to hash as uuid v3 (md5) or v5 (sha1)
config: generate v5 UUIDs from xml config content
testing: added xml_node_uuid sample to uuid-test
Merge pull request #202 from mtomaschewski/sha1sum-uuid

config: generate v5 UUIDs from xml config content