Fix a "configure" syntax error.

It had been introduced with the patch for bug entry 37098
and affected runs "--without-server" only.


configure.in:
  The conditional "BUILD_INNODB_TOOLS" is set depending on
  whether InnoDB is configured in the build,
  but that check is done only when building the server.
  
  For builds without the server it must also be set,
  or else "configure" reports an error.
  Set it to "false" in such builds, as this conditional
  only affects a tool that is useless in client installations.

configure.in

@@ -2728,8 +2728,10 @@ then
   AC_SUBST(THREAD_LOBJECTS)
 fi
 
-if test "$with_server" != "no"
+if test "$with_server" = "no"
 then
+  AM_CONDITIONAL([BUILD_INNODB_TOOLS], [false])
+else
   server_scripts="mysqld_safe mysql_install_db"
   sql_server_dirs="strings mysys dbug extra regex"