pgsql: Change /contrib to contrib for consistency.

Log Message:
-----------
Change /contrib to contrib for consistency.

Modified Files:
--------------
    pgsql:
        configure (r1.576 -> r1.577)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/configure?r1=1.576&r2=1.577)
        configure.in (r1.544 -> r1.545)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/configure.in?r1=1.544&r2=1.545)
    pgsql/doc:
        FAQ_turkish (r1.10 -> r1.11)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/FAQ_turkish?r1=1.10&r2=1.11)
        TODO (r1.2238 -> r1.2239)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/TODO?r1=1.2238&r2=1.2239)
    pgsql/doc/src/FAQ:
        FAQ_turkish.html (r1.11 -> r1.12)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/FAQ/FAQ_turkish.html?r1=1.11&r2=1.12)
        TODO.html (r1.747 -> r1.748)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/FAQ/TODO.html?r1=1.747&r2=1.748)
    pgsql/doc/src/sgml:
        installation.sgml (r1.298 -> r1.299)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/installation.sgml?r1=1.298&r2=1.299)
        runtime.sgml (r1.402 -> r1.403)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/runtime.sgml?r1=1.402&r2=1.403)
    pgsql/src/include:
        pg_config.h.in (r1.126 -> r1.127)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/include/pg_config.h.in?r1=1.126&r2=1.127)
    pgsql/src/tools/pgindent:
        README (r1.27 -> r1.28)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/tools/pgindent/README?r1=1.27&r2=1.28)