Merge branch 'openbugs' into 'master'

added downgrade and remove section for old Maths package

See merge request !167

packages/openbugs.xml

@@ -13,8 +13,25 @@
     <upgrade include="remove" />
     <upgrade include="install" />
 
+    <downgrade include="remove" />
+    <downgrade include="install" />
+
+    <remove cmd='cmd /c %WPKGSOFTWARE%\wpkg\tools\waitforprocess.cmd _ui' />
+    <remove cmd='"%PROGRAMFILES(x86)%\OpenBUGS\OpenBUGS%version%\unins000.exe" /VERYSILENT /SUPPRESSMSGBOXES /LOG' >
+      <condition>
+        <check type="file" condition="exists" path="%PROGRAMFILES(x86)%\OpenBUGS\OpenBUGS%version%\unins000.exe" />
+      </condition>
+      <exit code="any" />
+    </remove>
+    <remove cmd='cmd /c %WPKGSOFTWARE%\wpkg\tools\waitforprocess.cmd _ui' />
+    <!-- Section to remove old Maths install -->
     <remove cmd='cmd /c %WPKGSOFTWARE%\wpkg\tools\waitforprocess.cmd _ui' />
-    <remove cmd='"%PROGRAMFILES(x86)%\OpenBUGS\OpenBUGS%version%\unins000.exe" /VERYSILENT /SUPPRESSMSGBOXES /LOG' ><exit code="any" /></remove>
+    <remove cmd='"%PROGRAMFILES(x86)%\OpenBUGS\OpenBUGS321\unins000.exe" /VERYSILENT /SUPPRESSMSGBOXES /LOG' >
+      <condition>
+        <check type="file" condition="exists" path="%PROGRAMFILES(x86)%\OpenBUGS\OpenBUGS321\unins000.exe" />
+      </condition>
+      <exit code="any" />
+    </remove>
     <remove cmd='cmd /c %WPKGSOFTWARE%\wpkg\tools\waitforprocess.cmd _ui' />
   </package>