Fix alignment of help output.

configure

@@ -897,7 +897,7 @@ Optional Packages:
   --with-libedit-preferred  prefer BSD Libedit over GNU Readline
   --with-ossp-uuid        build with OSSP UUID library for UUID generation
   --with-libxml           build with XML support
-  --with-libxslt           build with XSLT support
+  --with-libxslt          build with XSLT support
   --without-zlib          do not use Zlib
   --with-gnu-ld           assume the C compiler uses GNU ld [default=no]

configure.in

 dnl Process this file with autoconf to produce a configure script.
-dnl $PostgreSQL: pgsql/configure.in,v 1.512 2007/04/21 17:26:17 petere Exp $
+dnl $PostgreSQL: pgsql/configure.in,v 1.513 2007/04/21 18:26:44 petere Exp $
 dnl
 dnl Developers, please strive to achieve this order:
 dnl
@@ -589,7 +589,7 @@ AC_SUBST(with_libxml)
 #
 # XSLT
 #
-PGAC_ARG_BOOL(with, libxslt, no, [  --with-libxslt           build with XSLT support],
+PGAC_ARG_BOOL(with, libxslt, no, [  --with-libxslt          build with XSLT support],
               [AC_DEFINE([USE_LIBXSLT], 1, [Define to 1 to build with XSLT support. (--with-libxslt)])])