konsoletyper
#451: add missing methods to java.util.Math (required by java.time)
add missing methods to Math required by java.time (for #451).
As discussed in https://github.com/m-m-m/tvm/issues/2 I am creating a temporary external extension module for java.time support for TeaVM so I am not blocked with TeaVM.
My plan is to do small PRs with changes in TeaVM that make sense, are consistent and can therefore (hopefully) be merged and included in upcoming releases.
(I can not easily change existing T* classes from classlib outside TeaVM in my lib as the classloader order (that is kind of random) then decides whether the original class from TeaVM or my alternative implementation is used. Therefore existing classes like TMath should be extended directly in TeaVM project).
Any feedback on this PR yet? Merging this would really help me to get out of the blockade I am currently facing with TeaVM. My dream would be that after merging this PR a new release of TeaVM gets released (ideally to maven central, but bintray would also help). Since more than one year I am unable to push out a working demo of https://github.com/m-m-m/ui-demo/ build with TeaVM. It works when I build TeaVM locally from this PR. Surely you can say "what the fuss" and "this is your problem and not ours" but it could also be a nice promotion for TeaVM to see great dreams and demos comming true with the help of TeaVM.
I believe this PR is not necessary for your java.time implementation. AFAIR, you use threeten implementation which does not rely on java 8 method, instead it comes with Jdk8Methods class which contains implementation for these methods.
Surely I can bypass Math in the T* classes emulating java.time.
So if it is a problem for you to merge this I have to add more workarounds to make TeaVM compile my code...
Actually, methods @hohwille provided are in JDK 8-9, so you can merge this PR as usual addition of missing methods.
