[8u26] Review Request RT-37562 [Monocle] Make monocle the default javafx.platform on all ARM/Linux devices

[Lisa Selle]

Hi Daniel,

Please review the proposed fix for 
https://javafx-jira.kenai.com/browse/RT-37562.

Details in the jira.

Note that this will not affect any bits shipping for 8u20; these are 
changes to property files for linux arm builds only.

Thanks,

Lisa