Bug#895469: openjfx FTBFS on armel: invalid instructions

[peter green]

movw and movt are armv7 only, so this is also affecting Raspbian. To fix both armel and raspbian the conditional should be <7

I whipped up a patch for that. I then ran into another issue, the compiler was bitching about uint16_t vs char16_t issues so I whipped up a patch for that too.

Debdiff for what I uploaded to raspbian is available at http://debdiffs.raspbian.org/main/o/openjfx/openjfx_8u141-b14-3%2brpi1.debdiff . No intent to NMU in Debian.