Add info about OSFAMILY

Author: keradus

src/6.3/en/incomplete-and-skipped-tests.xml

@@ -249,6 +249,12 @@ Tests: 1, Assertions: 0, Skipped: 1.</screen>
             <entry>@requires OS Linux</entry>
             <entry>@requires OS WIN32|WINNT</entry>
           </row>
+          <row>
+            <entry><literal>OSFAMILY</literal></entry>
+            <entry>Any <ulink url="http://php.net/manual/en/reserved.constants.php#constant.php-os-family">OS family</ulink></entry>
+            <entry>@requires OSFAMILY Solaris</entry>
+            <entry>@requires OSFAMILY Windows</entry>
+          </row>
           <row>
             <entry><literal>function</literal></entry>
             <entry>Any valid parameter to <ulink url="http://php.net/function_exists">function_exists</ulink></entry>