[llvm] [Support] Revert "Reimplement getMainExecutable() using sysctl on NetBSD"

This apparently does not work reliably after all (non-reentrant?)
and causes test failures such as:

http://lab.llvm.org:8011/builders/netbsd-amd64/builds/19254/steps/run%20unit%20tests/logs/FAIL%3A%20libc%2B%2B%3A%3Asize.pass.cpp

llvm-svn: 355302
1 file changed
tree: 6cd9e4519e903e537a821d0c79740314fa259edb
  1. clang/
  2. clang-tools-extra/
  3. compiler-rt/
  4. debuginfo-tests/
  5. libclc/
  6. libcxx/
  7. libcxxabi/
  8. libunwind/
  9. lld/
  10. lldb/
  11. llgo/
  12. llvm/
  13. openmp/
  14. parallel-libs/
  15. polly/
  16. pstl/
  17. .arcconfig
  18. .clang-format
  19. .clang-tidy
  20. README.md
README.md

The LLVM Compiler Infrastructure

This directory and its subdirectories contain source code for LLVM, a toolkit for the construction of highly optimized compilers, optimizers, and runtime environments.