perl 5.002beta1h patch: Configure

perl 5.002beta1h patch: Configure

Upgraded to metaconfig patchlevel 60.

Add in usesafe variable to include or exclude the Safe extension.

Test for sigaction().

Check for pager.  This was actually accidental since perldoc.PL
mentions $pager and metaconfig has a unit to check for the
user's pager.  In retrospect, I decided the Configure check
didn't do any harm and some extension writers might decide to
use it.

Always put man1dir under $prefix unless a command line
override is used.

Allow command-line overrides of $man1ext and $man3ext.

Allow man1dir and man3dir names like .../man.1 instead of
just .../man1.

Lots of rearrangements of various pieces of Configure.
This might be because I ran metaconfig on a different
architecture.

libc searching now honors $libpth.  Previously, it (almost)
always looked in /usr/lib before checking /lib.

Only prompt user if voidflags is not 15.  If voidflags is 15, then
we presume all is well.