Minor SConscript clean-up for Windows
Minor SConscript clean-up for Windows

Change-Id: Ifee94165bd3171b45d2f8791293860f43cf3cdbc
Signed-off-by: Dan Mihai <ba8e1833495515b49ded9e20cae80a8129155aa9@microsoft.com>
Reviewed-on: https://gerrit.iotivity.org/gerrit/15621
Tested-by: jenkins-iotivity <09cb29e8a2b473a2c978382eec13ee06fa017bda@opendaylight.org>
Reviewed-by: Mike Fenelon <765c1ea1ad8b7b919b9c046cb20b518277e493ca@microsoft.com>
Reviewed-by: Phil Coval <ff46fec9739d31cce915aabcc3a7a2c00eee4d6c@osg.samsung.com>
Reviewed-by: Dave Thaler <8a98d0850f57b73c42d096f8f8b11e2d5522d554@microsoft.com>

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