docs: add a screenLayout and uiMode values for configChanges attribute

          android:<a href="#clear">clearTaskOnLaunch</a>=["true" | "false"]

          android:<a href="#clear">clearTaskOnLaunch</a>=["true" | "false"]

          android:<a href="#config">configChanges</a>=["mcc", "mnc", "locale",

          android:<a href="#config">configChanges</a>=["mcc", "mnc", "locale",

                                 "touchscreen", "keyboard", "keyboardHidden",

                                 "touchscreen", "keyboard", "keyboardHidden",

                                 "navigation", "orientation", "fontScale"]

                                 "navigation", "orientation", "screenLayout",

                                 "fontScale", "uiMode"]

          android:<a href="#enabled">enabled</a>=["true" | "false"]

          android:<a href="#enabled">enabled</a>=["true" | "false"]

          android:<a href="#exclude">excludeFromRecents</a>=["true" | "false"]

          android:<a href="#exclude">excludeFromRecents</a>=["true" | "false"]

          android:<a href="#exported">exported</a>=["true" | "false"]

          android:<a href="#exported">exported</a>=["true" | "false"]

</p></dd>

</p></dd>

<dt><a name="config"></a>{@code android:configChanges}</dt>

<dt><a name="config"></a>{@code android:configChanges}</dt>

<dd>Lists configuration changes that the activity will handle itself.  When 

<dd>Lists configuration changes that the activity will handle itself.  When a configuration

changes that are not listed occur, the activity is shut down and restarted.  

change occurs at runtime, the activity is shut down and restarted by default, but declaring a

When a listed change occurs, the activity remains running and its <code>{@link android.app.Activity#onConfigurationChanged onConfigurationChanged()}</code> 

configuration with this attribute will prevent the activity from being restarted. Instead, the

method is called.

activity remains running and its <code>{@link android.app.Activity#onConfigurationChanged

onConfigurationChanged()}</code> method is called.

<p class="note"><strong>Note:</strong> Using this attribute should be

avoided and used only as a last-resort. Please read <a

href="{@docRoot}guide/topics/resources/runtime-changes.html">Handling Runtime Changes</a> for more

information about how to properly handle a restart due to a configuration change.</p>

<p>

<p>

Any or all of the following strings can be used to set this attribute.  Values are 

Any or all of the following strings are valid values for this attribute. Multiple values are

separated by '{@code |}' — for example, "{@code locale|navigation|orientation}".

separated by '{@code |}' — for example, "{@code locale|navigation|orientation}".

</p>

</p>

</tr><tr>

</tr><tr>

   <td>"{@code mcc}"</td>

   <td>"{@code mcc}"</td>

   <td>The IMSI mobile country code (MCC) has changed &mdash;

   <td>The IMSI mobile country code (MCC) has changed &mdash;

       that is, a SIM has been detected and updated the MCC.</td>

       a SIM has been detected and updated the MCC.</td>

</tr><tr>

</tr><tr>

   <td>"{@code mnc}"</td>

   <td>"{@code mnc}"</td>

   <td>The IMSI mobile network code (MNC) has changed &mdash;

   <td>The IMSI mobile network code (MNC) has changed &mdash;

       that is, a SIM has been detected and updated the MNC.</td>

       a SIM has been detected and updated the MNC.</td>

</tr><tr>

</tr><tr>

   <td>"{@code locale}"</td>

   <td>"{@code locale}"</td>

   <td>The locale has changed &mdash; for example, the user has selected a new 

   <td>The locale has changed &mdash; the user has selected a new

       language that text should be displayed in.</td>

       language that text should be displayed in.</td>

</tr><tr>

</tr><tr>

   <td>"{@code touchscreen}"</td>

   <td>"{@code touchscreen}"</td>

</tr><tr>

</tr><tr>

   <td>"{@code keyboardHidden}"</td>

   <td>"{@code keyboardHidden}"</td>

   <td>The keyboard accessibility has changed &mdash; for example, the

   <td>The keyboard accessibility has changed &mdash; for example, the

       user has slid the keyboard out to expose it.</td>

       user has revealed the hardware keyboard.</td>

</tr><tr>

</tr><tr>

   <td>"{@code navigation}"</td>

   <td>"{@code navigation}"</td>

   <td>The navigation type has changed.  (This should never normally happen.)</td>

   <td>The navigation type (trackball/dpad) has changed.  (This should never normally happen.)</td>

</tr><tr>

</tr><tr>

   <td>"{@code orientation}"</td>

   <td>"{@code orientation}"</td>

   <td>The screen orientation has changed &mdash; that is, the user has rotated 

   <td>The screen orientation has changed &mdash; the user has rotated

       the device.</td>

       the device.</td>

 </tr><tr>

   <td>"{@code screenLayout}"</td>

   <td>The screen layout has changed &mdash; this might be caused by a

             different display being activated.</td>

 </tr><tr>

 </tr><tr>

  <td>"{@code fontScale}"</td>

  <td>"{@code fontScale}"</td>

   <td>The font scaling factor has changed &mdash; that is, the user has selected 

   <td>The font scaling factor has changed &mdash; the user has selected

       a new global font size.</td>

       a new global font size.</td>

  </tr><tr>

  <td>"{@code uiMode}"</td>

   <td>The user interface mode has changed &mdash; this can be caused when the user places the

device into a desk/car dock or when the the night mode changes. See {@link

android.app.UiModeManager}. <em>Introduced in API Level 8</em>.</td>

  </tr>

  </tr>

</table>

</table>