Schism Tracker 0.2a for AmigaOS 4

- generally compiled now with -O3, except libmodplug/sndfile.cpp which would
  cause certain 16-bit samples to play corrupted with any optimization
- updated libSDL
- many changes and bug fixes (see Changelog and NEWS)

 PERMSSN    UID  GID    PACKED    SIZE  RATIO METHOD CRC     STAMP          NAME
---------- ----------- ------- ------- ------ ---------- ------------ -------------
[generic]                  655    1118  58.6% -lh5- 2e8b Jun 29  2005 Schism-0.2a/AmigaOS4_readme.txt
[generic]                  560     878  63.8% -lh5- 3f93 Jun 29  2005 Schism-0.2a/AUTHORS
[generic]                15931   39767  40.1% -lh5- 1f3c Jun 29  2005 Schism-0.2a/ChangeLog
[generic]                 7014   17992  39.0% -lh5- 4902 Jun 29  2005 Schism-0.2a/COPYING
[generic]                 1357    2566  52.9% -lh5- 7599 Jun 29  2005 Schism-0.2a/NEWS
[generic]                 1818    3486  52.2% -lh5- ac3c Jun 29  2005 Schism-0.2a/README
[generic]               479096  960060  49.9% -lh5- 4e29 Jun 29  2005 Schism-0.2a/Schism
[generic]                  258     425  60.7% -lh5- 91ca Jun 29  2005 Schism-0.2a/SDL.txt
[generic]                 6943   18150  38.3% -lh5- 618a Jun 29  2005 Schism-0.2a/TODO
---------- ----------- ------- ------- ------ ---------- ------------ -------------
 Total         9 files  513632 1044442  49.2%            Jun 29  2005