when cursorwindow allocation fails, print the number of cursors left open

the reason for bug:3281533, bug:3127159 is probably too many cursors are left
un-closed in the process.
print the info on the number of cursors left open when the exception
"cursorwindow allocation failed" occurs.
This should help us figure out if that indeed is the reason
and which process is leaving the cursors open.

Change-Id: I4b46be63f5dfbe9b102ad7a9cf9dd21e70f71e14