Fix building aarch64-windows-gnu by adding missing libc files and compiler_rt functions (#9555)

* fix issue 9519

Added some missing files from mingw

* add missing compiler_rt functions

* finish PR

* add aarch64-windows-gnu to test targets

* add more compiler_rt

* add log2

* add pow

* add modti3
fd2c1d8605Jonathan Marler committed on 9/7/2021, 4:44:21 PM· committed by GitHubparent16c3cd3
8 files changedLine totals unavailable