Made 'zopectl test' work for software homes which do not have an "inplace" build.

It used to require that test.py be in $ZOPE_HOME/bin/;  now it will use
$ZOPE_HOME as a fallback.

doc/CHANGES.txt

@@ -58,6 +58,10 @@ Zope Changes
 
     Other
 
+      - Made 'zopectl test' work for software homes which do not have
+        an "inplace" build (it used to require that test.py be in
+        $ZOPE_HOME/bin/;  now it will use $ZOPE_HOME as a fallback).
+
       - Improved logging of ConflictErrors. All conflict errors are
         logged at INFO, with counts of how many occurred and how many
         were resolved. Tracebacks for all conflicts are logged a DEBUG

lib/python/Zope2/Startup/zopectl.py

@@ -238,6 +238,8 @@ class ZopeCmd(ZDCmd):
             return
 
         script = os.path.join(zope_home, 'bin', 'test.py')
+        if not os.path.exists(script):
+            script = os.path.join(zope_home, 'test.py') # no inplace build!
         assert os.path.exists(script)
 
         # If --libdir is not supplied, use $INSTANCE_HOME/Products