Mono support is not fully baked, use -DUSE.mono to test


git-svn-id: https://svn.apache.org/repos/asf/incubator/etch/releases/release-1.0.0@712735 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/build-support/etch.common.xml b/build-support/etch.common.xml
index 10186ea..bd588e3 100644
--- a/build-support/etch.common.xml
+++ b/build-support/etch.common.xml
@@ -117,6 +117,9 @@
         <and>
             <not><os family="windows" /></not>
             <available file="${env.MONO_HOME}/bin/mdtool" />
+            <!-- TODO mono support is not fully baked, use -DUSE.mono when
+            testing -->
+            <isset property="USE.mono" />
         </and>
     </condition>
     <condition property="BUILD.csharp">
diff --git a/examples/chat/build.xml b/examples/chat/build.xml
index 2c5dc59..96ede84 100644
--- a/examples/chat/build.xml
+++ b/examples/chat/build.xml
@@ -31,6 +31,9 @@
         <and>
             <not><os family="windows" /></not>
             <available file="${env.MONO_HOME}/bin/mdtool" />
+            <!-- TODO mono support is not fully baked, use -DUSE.mono to test
+            -->
+            <isset property="USE.mono" />
         </and>
     </condition>
     <condition property="BUILD.csharp">