Merged in nalp/elog-robustness (pull request #2)
1) Makefile: make fails if no git-revision file is already created
2) elogd.c: typos, creation of logdir with appropriated user/group, missing LDAP checks and robustness of show_change_pwd_page
3) auth.c: robustness of auth_verify_password
1) Makefile: make fails if no git-revision file is already created
2) elogd.c: typos, creation of logdir with appropriated user/group, missing LDAP checks and robustness of show_change_pwd_page
3) auth.c: robustness of auth_verify_password