[fpc-pascal] Working Free Pascal android JNI example

[Ludo Brands]

> My main doubt here is if androidprt0.as is really required, 
> which would mean that I can only produce android libraries if 
> I make changes to the compiler.
> 

In NativeTest\jni is a makeandroid.bat that assembles androidprt0 and calls
ppcrossarm with -k"-landroidprt0". No need to change the compiler for that,
unless there are conflicts with existing arm initialisation.

Ludo