Process index operations prior to a catalog search

That's the minimal patching that collective.indexing was performing
into Products.CMFPlone.

Part of PLIP #1343.

Products/CMFPlone/CatalogTool.py

@@ -39,6 +39,7 @@
 from zope.interface import implementer
 from zope.interface import providedBy
 
+from Products.CMFCore.indexing import processQueue
 
 logger = logging.getLogger('Plone')
 
@@ -366,6 +367,7 @@ def _increment_counter(self):
 
     @security.private
     def getCounter(self):
+        processQueue()
         return self._counter is not None and self._counter() or 0
 
     @security.protected(SearchZCatalog)
@@ -379,6 +381,7 @@ def searchResults(self, REQUEST=None, **kw):
         effectiveRange checking entirely even for those without portal
         wide AccessInactivePortalContent permission.
         """
+        processQueue()
         kw = kw.copy()
         show_inactive = kw.get('show_inactive', False)
         if isinstance(REQUEST, dict) and not show_inactive: