portability notes for msvc and mingw on windows x86

website/guide/portability.html

@@ -43,6 +43,18 @@ detail below the table.</p>
 <td>Aliasing issues with clang 3.3 on FreeBSD, with <code>-m32</code> and packed <code>duk_tval</code>.</td>
 </tr>
 <tr>
+<td>Windows</td>
+<td>MinGW</td>
+<td>x86</td>
+<td><code>-std=c99</code> recommended, only ISO 8601 date format supported (no platform specific format)</td>
+</tr>
+<tr>
+<td>Windows</td>
+<td>MSVC</td>
+<td>x86</td>
+<td>Tested with Visual Studio Express 2010, only ISO 8601 date format supported (no platform specific format)</td>
+</tr>
+<tr>
 <td>AmigaOS</td>
 <td>VBCC</td>
 <td>M68K</td>