Log Message:
Update ast-ksh (and static-ast-ksh) to version 20030621.

Changes since 20030422 (from the release notes):
   A source and binary update. There are few small but significant patches
   for ksh and nmake. nmake -l/+l library list generation is much improved.
   IBM z-series { linux.s390, linux.s390-64 } and i-series { linux.ppc64 }
   binary architectures have been added, and the ebcdic { mvs.390 } has
   been updated after a long absence.