Fixing quotation mark usage for Windows

The Windows command shell try to interpret the single quotation mark
as a command.

Change-Id: I4dc4382bdbe0c90565f6ac56c33a80971669344c
Reviewed-by: Andras Becsi <andras.becsi@digia.com>
Reviewed-by: Michael Bruning <michael.bruning@digia.com>