Use constants for int mask combinations of debug_backtrace() (#5537)

* Add two other variants

* Make order consistent

* Remove wording change

* Remove all numeric input other than 0

Author: shaedrich

reference/errorfunc/functions/debug-backtrace.xml

@@ -56,21 +56,21 @@
            <tbody>
             <row>
              <entry><code>debug_backtrace()</code></entry>
-             <entry morerows="2" valign="middle">
+             <entry morerows="1" valign="middle">
               Populates both indexes
              </entry>
             </row>
             <row>
              <entry><code>debug_backtrace(DEBUG_BACKTRACE_PROVIDE_OBJECT)</code></entry>
             </row>
             <row>
-             <entry><code>debug_backtrace(1)</code></entry>
+             <entry><code>debug_backtrace(~DEBUG_BACKTRACE_PROVIDE_OBJECT)</code></entry>
+             <entry morerows="1" valign="middle">
+              Omits index <literal>"object"</literal> and populates index <literal>"args"</literal>.
+             </entry>
             </row>
             <row>
              <entry><code>debug_backtrace(0)</code></entry>
-             <entry valign="middle">
-              Omits index <literal>"object"</literal> and populates index <literal>"args"</literal>.
-             </entry>
             </row>
             <row>
              <entry><code>debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS)</code></entry>
@@ -79,17 +79,14 @@
              </entry>
             </row>
             <row>
-             <entry><code>debug_backtrace(2)</code></entry>
+             <entry><code>debug_backtrace(~DEBUG_BACKTRACE_PROVIDE_OBJECT | DEBUG_BACKTRACE_IGNORE_ARGS)</code></entry>
             </row>
             <row>
              <entry><code>debug_backtrace(DEBUG_BACKTRACE_PROVIDE_OBJECT|DEBUG_BACKTRACE_IGNORE_ARGS)</code></entry>
-             <entry morerows="1" valign="middle">
+             <entry valign="middle">
               Populate index <literal>"object"</literal> <emphasis>and</emphasis> omit index <literal>"args"</literal>.
              </entry>
             </row>
-            <row>
-             <entry><code>debug_backtrace(3)</code></entry>
-            </row>
            </tbody>
           </tgroup>
          </table>