build: Rewrite sqlite SConscript a more portable way

build: Rewrite sqlite SConscript a more portable way

Windows support should be improved.

Fixed weird indentation that looked strange
 when I was investigating if files were present in Tizen builder.

Change-Id: I80c9667a502a1115fdfbcd5ecd50b1e799ff5fdb
Bug: https://jira.iotivity.org/browse/IOT-820
Origin: https://gerrit.iotivity.org/gerrit/#/c/9641/1/
Signed-off-by: Philippe Coval <philippe.coval@osg.samsung.com>
Reviewed-on: https://gerrit.iotivity.org/gerrit/9653
Tested-by: jenkins-iotivity <jenkins-iotivity@opendaylight.org>
Reviewed-by: Dave Thaler <dthaler@microsoft.com>