Tidy overly long configure help lines.

configure

@@ -870,7 +870,7 @@ Optional Features:
   --enable-depend         turn on automatic dependency tracking
   --enable-cassert        enable assertion checks (for debugging)
   --enable-thread-safety  make client libraries thread-safe
-  --enable-thread-safety-force  force thread-safety in spite of thread test failure
+  --enable-thread-safety-force  force thread-safety despite thread test failure
   --disable-largefile     omit support for large files
 Optional Packages:
@@ -888,7 +888,7 @@ Optional Packages:
   --with-perl             build Perl modules (PL/Perl)
   --with-python           build Python modules (PL/Python)
   --with-krb5             build with Kerberos 5 support
-  --with-krb-srvnam=NAME  name of the default service principal in Kerberos [postgres]
+  --with-krb-srvnam=NAME  default service principal name in Kerberos [postgres]
   --with-pam              build with PAM support
   --with-ldap             build with LDAP support
   --with-bonjour          build with Bonjour support

configure.in

 dnl Process this file with autoconf to produce a configure script.
-dnl $PostgreSQL: pgsql/configure.in,v 1.514 2007/05/04 15:20:52 tgl Exp $
+dnl $PostgreSQL: pgsql/configure.in,v 1.515 2007/06/04 21:55:43 adunstan Exp $
 dnl
 dnl Developers, please strive to achieve this order:
 dnl
@@ -423,7 +423,7 @@ else
 PGAC_ARG_BOOL(enable, thread-safety, yes, [  --enable-thread-safety  make client libraries thread-safe])
 fi
 
-PGAC_ARG_BOOL(enable, thread-safety-force, no, [  --enable-thread-safety-force  force thread-safety in spite of thread test failure])
+PGAC_ARG_BOOL(enable, thread-safety-force, no, [  --enable-thread-safety-force  force thread-safety despite thread test failure])
 if test "$enable_thread_safety" = yes -o \
         "$enable_thread_safety_force" = yes; then
   enable_thread_safety="yes"	# for 'force'
@@ -482,7 +482,7 @@ AC_SUBST(krb_srvtab)
 # Kerberos configuration parameters
 #
 PGAC_ARG_REQ(with, krb-srvnam,
-             [  --with-krb-srvnam=NAME  name of the default service principal in Kerberos [[postgres]]],
+             [  --with-krb-srvnam=NAME  default service principal name in Kerberos [[postgres]]],
              [],
              [with_krb_srvnam="postgres"])
 AC_DEFINE_UNQUOTED([PG_KRB_SRVNAM], ["$with_krb_srvnam"],