to be automatically generated by the makefile; however we include a copy
to enable the Windows build to work. On Unix, the makefile was
overwriting the file with a symbolic link to
libpcre/pcre_chartables.c.dist, which was causing revision-control
headaches. Now that file is copied instead of linked to, so its contents
don't change.
It is safe to use a static copy of the file instead of an auto-generated
one because Nmap has never used the auto-generation feature. You need to
use a special flag --enable-rebuild-chartables to get that. So copying
the file has the same behavior as creating a link. Furthermore, it's not
desirable to generate that file (using dftables, an auxiliary program
that uses the current locale) because we don't want our regular
expressions to be locale-dependent.
pcre_chartables.c was also removed from CLEANFILES so it's not deleted
by "make clean" or "make distclean". pcre.h is still deleted by "make
distclean" because it's included in AC_CONFIG_FILES. That's not as big a
deal.
