Log Message:
-----------
Remove tabs from installation.sgml.
Modified Files:
--------------
pgsql/doc/src/sgml:
installation.sgml (r1.288 -> r1.289)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/installation.sgml.diff?r1=1.288&r2=1.289)