ALSA Sequencer changes

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10 July 1998 - FKW

- Enhanced timer with ticks and tempo. 
- Added dispatching from tick based piority queue

11 July 1998 - FKW

- Checked and (hopefully) fixed for Linux 2.0.x compatibilty: all access to
  userland now uses the copy_from_user() and copy_to_user() macro's.
- started using export-symbols program to generate seq_export.c from
  seq_export.sym - added ioctl()s SND_SEQ_IOCTL_GET_TIMER_INFO and
  SND_SEQ_IOCTL_SET_TIMER_INFO for commincation with the timer 
- Changed playmidi client to use tick timestamps instead of real-time

15 July 1998 - FKW

- changes to proc interface
- integrated prototype directory into ALSA directory structure.
- multiple queues are working now

25 July 1998 - FKW

- added test client in kernel mode which implements a MIDI driver 
- added registered ports and added subscription mechanism

03 August 1998 - FKW

- remove SET_CLIENT_NAME ioctl, and added SND_SEQ_IOCTL_SET_CLIENT_INFO
  ioctl

31 August 1998 - FKW

- changed datatype for real-time events from own type (sec, nsec) to standard
  struct timespec (tv_sec, tv_nsec)

