Add link to expat's site

Add commentary on why zlib is threadsafe (fully threadsafe as of 1.1.2
if default zalloc and zfree used - see zlib's changelog)

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@96409 13f79535-47bb-0310-9956-ffa450edef68

diff --git a/docs/manual/developer/thread_safety.html b/docs/manual/developer/thread_safety.html
index a1d2c9ba3c2f6dc58f4665a5c2282e00e318b86c..85b30cf8a11cc03e26b61703535af868c1777a42 100644 (file)
--- a/docs/manual/developer/thread_safety.html
+++ b/docs/manual/developer/thread_safety.html
@@ -103,8 +103,8 @@ individual symbols in the module.</p>
         <td> </td>
       </tr>
       <tr>
-        <td>Expat</td>
-        <td> </td>
+        <td><a href="http://expat.sourceforge.net/">Expat</a></td>
+        <td></td>
         <td>Yes</td>
         <td>Need a separate parser instance per thread</td>
       </tr>
@@ -225,8 +225,8 @@ individual symbols in the module.</p>
       <tr>
         <td><a href="http://www.gzip.org/zlib/">zlib</a></td>
         <td>1.1.4</td>
-        <td>Yes?</td>
-        <td></td>
+        <td>Yes</td>
+        <td>Relies upon thread-safe zalloc and zfree functions.  Default is to use libc's calloc/free which are thread-safe.</td>
       </tr>
     </table>
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