patch-add-an-ldapoption-to-disable-chasing-ldap-referrals (patch 1 of 1)

'git apply --summary --stat --apply --verbose' output was:

 doc/src/sgml/client-auth.sgml |    8 ++++++++
 src/backend/libpq/auth.c      |   24 ++++++++++++++++++++++++
 src/backend/libpq/hba.c       |   12 ++++++++++++
 src/include/libpq/hba.h       |    8 ++++++++
 4 files changed, 52 insertions(+), 0 deletions(-)

For original context, see http://www.postgresql.org/message-id/CANkGpBtabjA=k_phdPNSUsWQMYkz1CvB4=aO2HJy_6-f5SZUsA@mail.gmail.com
Adding travis.yml