update license header text

Update the last year of copyright.

Update remaining 2004 copyright notices.

fix name of The Apache Software Foundation

apply Apache License, Version 2.0

update license to 2004.

finished that boring job: update license to 2003. Happy New Year! ;-))

Update our copyright for this year.

Update copyright to 2001

Redirect stderr to /dev/null to suppress error messages. Submitted by: Ralf Engelschall <rse@engelschall.com>

Workaround for systems like BSD/OS without mktemp.

Don't use $0 for creating tmpfile as it will contain "/".

Add Convert-to-BSD-Makefiles-On-The-Fly system Note 1: Only needed for BSD/OS. Note 2: Invent better heuristic (timestamp checks for build/*.mk). Note 3: Conversion is currently one-way Note 4: Don't package on BSD/OS.