XXX Remove nawk(1)

*** 21,32 ****
  #
  #
  # Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
  # Use is subject to license terms.
  #
- #ident  "%Z%%M% %I%     %E% SMI"
- #
  
  #
  # Given a header file, extract function prototypes and global variable
  # declarations in a form that can be used in a mapfile.  The list of extracted
  # functions and variables will be combined with a user-specified template to
--- 21,30 ----
*** 110,120 ****
  function extract_prototypes
  {
          typeset header="$1"
          typeset prefix="$2"
  
!         nawk -v prefix="$prefix" <$header '
                  /^.*MAPFILE: export \"[^\"]*\"$/ {
                          if (protoexclude) {
                                  print "ERROR: export after exclude\n";
                                  exit(1);
                          }
--- 108,118 ----
  function extract_prototypes
  {
          typeset header="$1"
          typeset prefix="$2"
  
!         /usr/xpg4/bin/awk -v prefix="$prefix" <$header '
                  /^.*MAPFILE: export \"[^\"]*\"$/ {
                          if (protoexclude) {
                                  print "ERROR: export after exclude\n";
                                  exit(1);
                          }
*** 192,202 ****
  function extract_section
  {
          typeset skel="$1"
          typeset secname="$2"
  
!         nawk <$skel -v name=$secname -v skel=$skel '
              /\/\* [^ ]* [^ ]* \*\// && $3 == name {
                  if ($2 == "BEGIN") {
                          printing = 1;
                  } else {
                          printing = 0;
--- 190,200 ----
  function extract_section
  {
          typeset skel="$1"
          typeset secname="$2"
  
!         /usr/xpg4/bin/awk <$skel -v name=$secname -v skel=$skel '
              /\/\* [^ ]* [^ ]* \*\// && $3 == name {
                  if ($2 == "BEGIN") {
                          printing = 1;
                  } else {
                          printing = 0;