Add CliScheme.php:

- displays the database scheme (for usage in upgrade.php)

PFAHandler:
- add "Scheme" to the list of available tasks

postfixadmin-cli.php:
- add "scheme" to help

This is the first patch of a series sponsored by 
    Bund der Deutschen Landjugend (german rural youth)
	http://bdl.landjugend.info/



git-svn-id: https://svn.code.sf.net/p/postfixadmin/code/trunk@1710 a1433add-5e2c-0410-b055-b7f2511e0802

scripts/postfixadmin-cli.php

@@ -472,6 +472,7 @@ class PostfixAdmin {
                 $this->stdout("    add       Add an item");
                 $this->stdout("    update    Update an item");
                 $this->stdout("    delete    Delete an item");
+                $this->stdout("    scheme    Print database scheme (useful for developers only)");
                 $this->stdout("    help      Print help output");
                 $this->stdout("");
                 $this->stdout("");