pgsql: Update broken and permanently moved links

Log Message:
-----------
Update broken and permanently moved links

Modified Files:
--------------
pgsql/doc/src/sgml:
acronyms.sgml (r1.7 -> r1.8)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/acronyms.sgml?r1=1.7&r2=1.8)
biblio.sgml (r1.27 -> r1.28)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/biblio.sgml?r1=1.27&r2=1.28)
btree-gist.sgml (r1.4 -> r1.5)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/btree-gist.sgml?r1=1.4&r2=1.5)
charset.sgml (r2.98 -> r2.99)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/charset.sgml?r1=2.98&r2=2.99)
client-auth.sgml (r1.133 -> r1.134)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/client-auth.sgml?r1=1.133&r2=1.134)
docguide.sgml (r1.80 -> r1.81)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/docguide.sgml?r1=1.80&r2=1.81)
install-win32.sgml (r1.56 -> r1.57)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/install-win32.sgml?r1=1.56&r2=1.57)
installation.sgml (r1.342 -> r1.343)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/installation.sgml?r1=1.342&r2=1.343)
intarray.sgml (r1.8 -> r1.9)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/intarray.sgml?r1=1.8&r2=1.9)
intro.sgml (r1.35 -> r1.36)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/intro.sgml?r1=1.35&r2=1.36)
ltree.sgml (r1.3 -> r1.4)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/ltree.sgml?r1=1.3&r2=1.4)
maintenance.sgml (r1.100 -> r1.101)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/maintenance.sgml?r1=1.100&r2=1.101)
nls.sgml (r1.18 -> r1.19)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/nls.sgml?r1=1.18&r2=1.19)
textsearch.sgml (r1.54 -> r1.55)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/textsearch.sgml?r1=1.54&r2=1.55)
wal.sgml (r1.64 -> r1.65)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/wal.sgml?r1=1.64&r2=1.65)