feedback on --permit-illegal-access

[Jochen Theodorou]

Hi,

so today I found finally _JAVA_OPTIONS to get our gradle build running 
and of course I used --permit-illegal-access and I thought I give some 
feedback here.

Running a clean test on our build will result in 44531 warning messages. 
Of which 6394 are unique. of course some of those warnings are actually 
from gradle and some are from xstream, but that makes maybe 21 less.

Why do we have such a huge amount of warnings? That is because of the 
way we are building our meta classes, which we still have to change and 
use JDK9 special code (something we tried to avoid)

bye Jochen