[Box Backup-commit] [boxbackup/boxbackup] ddf07a: Add ax_check_compile_flag.m4

[GitHub]

  Branch: refs/heads/s3_support_merge_2
  Home:   https://github.com/boxbackup/boxbackup
  Commit: ddf07a25841a7ffbecc3025ac87d9cfae8ea186e
      https://github.com/boxbackup/boxbackup/commit/ddf07a25841a7ffbecc3025ac87d9cfae8ea186e
  Author: Chris Wilson <chris+github at qwirx.com>
  Date:   2016-11-07 (Mon, 07 Nov 2016)

  Changed paths:
    A infrastructure/m4/ax_check_compile_flag.m4

  Log Message:
  -----------
  Add ax_check_compile_flag.m4