outdated files after make world

[Birk]

Hi all,

After my last make world (updated to 4.7-RELEASE-p10) I checked 
which files are older than the start of the build:

  338 Mar  6  2002 /boot/loader.rc
12168 Mar  6  2002 /usr/include/machine/if_wavelan_ieee.h
 1564 May  1  2002 /usr/include/netinet/ip_auth.h
34148 May  1  2002 /usr/include/netinet/ip_compat.h
21840 May  1  2002 /usr/include/netinet/ip_fil.h
 1905 May  1  2002 /usr/include/netinet/ip_frag.h
 8826 May  1  2002 /usr/include/netinet/ip_nat.h
 4559 May  1  2002 /usr/include/netinet/ip_proxy.h
 5621 May  1  2002 /usr/include/netinet/ip_state.h
  324 May  1  2002 /usr/include/netinet/ipl.h
 5930 Mar  6  2002 /usr/include/values.h
  858 Mar  6  2002 /usr/libdata/perl/5.00503/mach/_h2ph_pre.ph
  646 Jul  7  2002 /usr/libdata/perl/5.00503/mach/libusb.ph
   28 Jul  7  2002 /usr/libdata/perl/5.00503/mach/ss/mit-sipb-copyright.ph
 1006 Jul  7  2002 /usr/libdata/perl/5.00503/mach/ss/ss.ph
 1560 Jul  7  2002 /usr/libdata/perl/5.00503/mach/ss/ss_err.ph
80736 Mar 23 09:01 /usr/libexec/ld-elf.so.1
80736 Mar 16 09:29 /usr/libexec/ld-elf.so.1.old

I know for sure, that _h2ph_pre.ph and ld-elf.so.1 are needed.
Why where they not updated?
For the others, is it save to remove them?


thx
 Birk