Log Message:
Changes 2.7.5:
* NetBSD and general pkgsrc compatibility.  Should get rid of the only
  patch used in pkgsrc.

Changes 2.7.4:
* Print the message that we switch to normal from O_DIRECT only when
  verbose > 0.

Changes 2.7.3:
* More c flags changes for more portability.

Changes 2.7.2:
* Fix compilation under Redhat-7.3.

Changes 2.7.1:
* Support for $CSTREAM_AUDIO_BITRATE.