This routine was "use"ing File::Basename. This commit removes that

"use" and replaces it with equivalent inline code. The reason is that
Perl has some very nasty circular dependancies, and I am trying to
get the System Perl upgraded by one maintenance level.

The basic rule, until I can find a way to solve this, is that
the build tools MAY NOT use any library code; it must all be inline.

sys/kern/makedevops.pl

@@ -34,6 +34,8 @@
 # From @(#)vnode_if.sh	8.1 (Berkeley) 6/10/93
 # From @(#)makedevops.sh 1.1 1998/06/14 13:53:12 dfr Exp $
 # From @(#)makedevops.sh ?.? 1998/10/05
+#
+# $Id$
 
 #
 # Script to produce device front-end sugar.
@@ -47,8 +49,6 @@ $keepcurrentdir = 1;
 
 $line_width = 80;
 
-use File::Basename;
-
 # Process the command line
 #
 while ( $arg = shift @ARGV ) {
@@ -395,3 +395,31 @@ sub format_line {
 
    return $rline . $line;
 }
+
+# This routine is a crude replacement for one in File::Basename. We
+# cannot use any library code because it fouls up the Perl bootstrap
+# when we update a perl version. MarkM
+
+sub fileparse {
+   my ($filename, @suffix) = @_;
+   my ($dir, $name, $type, $i);
+
+   $type = '';
+   foreach $i (@suffix) {
+      if ($filename =~ m|$i$|) {
+         $filename =~ s|$i$||;
+         $type = $i;
+      }
+   }
+   if ($filename =~ m|/|) {
+      $filename =~ m|([^/]*)$|;
+      $name = $1;
+      $dir = $filename;
+      $dir =~ s|$name$||;
+   }
+   else {
+      $dir = '';
+      $name = $filename;
+   }
+   ($name, $dir, $type);
+}