Merge branch 'rs/code-cleaning'

Merge branch 'rs/code-cleaning'

* rs/code-cleaning:
  remote-testsvn: use internal argv_array of struct child_process in cmd_import()
  bundle: use internal argv_array of struct child_process in create_bundle()
  fast-import: use hashcmp() for SHA1 hash comparison
  transport: simplify fetch_objs_via_rsync() using argv_array
  run-command: use internal argv_array of struct child_process in run_hook_ve()
  use commit_list_count() to count the members of commit_lists
  strbuf: use strbuf_addstr() for adding C strings