Rework source layout in preparation for modular sudo.

doc/sudo.man.pl

@@ -0,0 +1,23 @@
+#!/usr/bin/perl -p
+
+BEGIN {
+    %tags = ( 'a', '@BAMAN@', 'c', '@LCMAN@', 'r', '@SEMAN@', 't', '@SEMAN@');
+    $t = undef;
+}
+if (/^\.IP(.*-([acrt]))?/) {
+    $t = $1 ? $tags{$2} : undef;
+} elsif (/-a.*auth_type/) {
+    $_ = $tags{'a'} . $_;
+} elsif (/(-c.*class.*\||login_cap)/) {
+    $_ = $tags{'c'} . $_;
+} elsif (/-r.*role.*-t.*type/) {
+    $_ = $tags{'r'} . $_;
+}
+
+# Fix up broken pod2man formatting of F<@foo@/bar>
+s/\\fI\\f(\(C)?I\@([^\@]*)\\fI\@/\\fI\@$2\@/g;
+
+# comment out Compile-time-specific lines in DESCRIPTION
+if ($t) {
+    $_ = $t . $_;
+}