Parse support for [no]magicsizes; new MAGIC_FEATURE_CONTROL bitmask

docs/gl_ES.UTF-8/MAGIC-API.txt

@@ -191,6 +191,8 @@ Magic Tool Plugin API Documentation
            features relevant to Magic tools which have been disabled in this
            session. Test using the C bitwise 'and' operator, '&'. The
            features are defined in tp_magic_api.h:
+              * MAGIC_FEATURE_CONTROL: Magic tool controls (paint vs
+                fullscreen) (--nomagiccontrols)
               * MAGIC_FEATURE_SIZE: Magic tool size (--nomagicsizes)
            Your Magic tool(s) may wish to react differently depending on
            whether one or more features have been disabled. (For example, the

docs/gl_ES.UTF-8/html/MAGIC-API.html

@@ -289,6 +289,8 @@
                   <b>Note:</b> Called once by Tux Paint, at startup. It is called after "<code>api_version()</code>", if Tux Paint believes your plugin to be compatible.                </p>
                 <p>
                   The <code>disabled_features</code> value contains bits set for any Tux Paint features relevant to Magic tools which have been disabled in this session. Test using the C bitwise 'and' operator, '<code>&amp;</code>'. The features are defined in <code>tp_magic_api.h</code>:                  <ul>
+                    <li>
+                      <code>MAGIC_FEATURE_CONTROL</code>: Magic tool controls (paint vs fullscreen) (<code>--nomagiccontrols</code>)                    </li>
                     <li>
                       <code>MAGIC_FEATURE_SIZE</code>: Magic tool size (<code>--nomagicsizes</code>)                    </li>
                   </ul>