Sulong, and thanks for all the fish

Dynamic languages rely on native extensions written in languages such as C/C++ or Fortran. To efficiently support the execution of native extensions in the multi-lingual GraalVM, we have implemented Sulong, which executes LLVM IR to support all languages that have an LLVM front end. It supports configurations with respect to memory-allocation and memory-access strategies that have different tradeoffs concerning safety and interoperability with native libraries. Recently, we have been working on balancing the tradeoffs, on supporting inline assembly and GCC compiler builtins, and on executing a complete libc on Sulong.