Bug#765397: please support architectures other than x86

[Emmanuel Bourg]

Control: tags -1 + pending

> The openjfx build system has an artifical/political limitation on x86
> architectures.  Please remove that limitation and let the package build (and
> maybe fail) on other architectures as well.

I tried to remove this limitation but it fails later. I fixed some of
the issues encountered, but there are errors left when compiling WebKit.
I've committed the changes in the Git repository if someone wants to get
a look.

http://anonscm.debian.org/cgit/pkg-java/openjfx.git

I plan to upload them when JavaFX 8u40 is officially released.