Produce a source tarball from the mercurial repo using the following steps:

  hg clone http://hg.mozilla.org/projects/ldap-sdks
  cd ldap-sdks
  hg archive -p ldapjdk-4.19 -r default -t tgz -I buildjsdk.txt -I java-sdk ldapjdk-4.19.tar.gz

NOTE: the format of the .tar.gz file has changed.  The file/directory layout use
d to look like this:

mozldap-4.18/mozilla/directory/
mozldap-4.18/mozilla/directory/buildjsdk.txt
mozldap-4.18/mozilla/directory/java-sdk/

I have collapsed the directories to be this instead:

mozldap-4-19/
mozldap-4-19/buildjsdk.txt
mozldap-4-19/java-sdk/

