QNX: Fix installers on Windows and Linux

Find all the tools under the SDP path and add .exe to
Windows host tools.

Change-Id: I866fb461e4d5fc26e4c8637d21f13d8c5299ef40
Reviewed-by: Wolfgang Bremer <wbremer@blackberry.com>
Reviewed-by: Sergio Ahumada <sahumada@blackberry.com>