This adds copyright verbiage to the Perl scripts. Scripts that are
known to be clean w.r.t. the 2-clause BSD license are given that
license; unclear ones are given the "LGPL for now".
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
1. Allow included files in rdsrc.pl
2. New program inslist.pl to generate instruction list from insns.dat
3. Mark certain comments in insns.dat as documentation subheaders
4. Add Instruction List appendix to nasmdoc.src
5. Update build process to invoke inslist.pl
