Add privilege qcert for accessing certificates by qmaild, qmailr

[mbhangui]

1. cleanq.c, qhpsi.c, qscanq.c: renamed auto_uidc, auto_gidc to auto_uidv, auto_gidv
2. dknewkey.sh: use qcerts group for certificate group permission
3. get_uid.c: added qcerts group ID for certificate group permissions
4. get_uid.c: renamed auto_uidv, auto_gidv to auto_uidi, auto_gidi
5. get_uid.c: added auto_gidc for qcerts group ID
6. indimail-mta.spec: added group ID qcerts for certificate group permissions.
7. perm_list.in: updated group ownership of certs, domainkeys directory to qcerts
8. qlocal_upgrade.in: add group ID qcerts
9. qlocal_upgrade.in: updated group id of certs to qcerts
10. qlocal_upgrade.in: added qcerts as supplementary group for qmaild, qmailr and apache
11. qmail-poppass.c, sql-database.c: renamed auto_uidv to auto_uidi, auto_gidv to auto_gidi
12. qmail-showctl.c: renamed auto_uidv to auto_uidi, auto_uidc to auto_uidv, auto_gidv to auto_gidi
13. qmail-showctl.c: added auto_uidc for qcerts group ID
14. qmail-sql.c: renamed auto_uidv, auto_gidv to auto_uidi, auto_gidi
15. smtpd.c: fix dossl function - return on error
16. svctool.in: use tcpserver -u qmaild for running qmail-smtpd for qcerts supplememtary group
17. svctool.in: create qcerts group ID and added qcerts as supplementary group for qmailr, qmaild, apache
18. svctool.in: create certs with root:qcerts owner:group
19. update_tmprsadh: create rsa/dh parameter files with root:qcerts owner:group
20. debian/indimail-mta.postinst.in: added --setgroups to set USE_SETGROUPS env variable for qmail-start