Updated nginx to 1.18.0-2

The main goal of this update is to bring improved module dependency tracking
introduced in the default branch here:

http://hg.nginx.org/pkg-oss/rev/b4400ef4e280

This should also fix the issue with build_module.sh reported here:
https://trac.nginx.org/nginx/ticket/2067
24 files changed
tree: 931adb4c3237a70c829e161fccf74bc36e9eab63
  1. alpine/
  2. debian/
  3. docs/
  4. rpm/
  5. .hgtags
  6. build_module.sh
  7. Makefile