Remove vestigial 3DFS support code (re: f88f302c)

Support for the long-dead 3DFS userland versioning file system was
already removed from ksh93 (although I'd overlooked some minor
things), but libast still supported it. This removes that too.

src/lib/libast/include/fs3d.h,
src/lib/libast/man/fs3d.3,
src/lib/libast/misc/fs3d.c:
- Removed.

bin/package,
src/cmd/INIT/package.sh:
- Remove attempted use of removed vpath builtin.

src/cmd/ksh93/*:
- Remove minor 3dfs vestiges.

src/lib/lib{ast,cmd,coshell}/*:
- Remove code supporting 3dfs.

src/lib/libast/man/ast.3

@@ -119,17 +119,6 @@ astconf("UNIVERSE", 0, universe);
 .EE
 The settable configuration names are:
 .TP
-.L FS_3D
-.L 1
-if
-.IR 3d (1)
-viewpathing is enabled,
-.L 0
-otherwise.
-This is an alternative to the
-.IR fs3d (3)
-interface.
-.TP
 .L PATH_RESOLVE
 .L logical
 if symbolic links are followed during file tree traversal,

src/lib/libast/man/fs3d.3

@@ -1,92 +0,0 @@
-.fp 5 CW
-.de Af
-.ds ;G \\*(;G\\f\\$1\\$3\\f\\$2
-.if !\\$4 .Af \\$2 \\$1 "\\$4" "\\$5" "\\$6" "\\$7" "\\$8" "\\$9"
-..
-.de aF
-.ie \\$3 .ft \\$1
-.el \{\
-.ds ;G \&
-.nr ;G \\n(.f
-.Af "\\$1" "\\$2" "\\$3" "\\$4" "\\$5" "\\$6" "\\$7" "\\$8" "\\$9"
-\\*(;G
-.ft \\n(;G \}
-..
-.de L
-.aF 5 \\n(.f "\\$1" "\\$2" "\\$3" "\\$4" "\\$5" "\\$6" "\\$7"
-..
-.de LR
-.aF 5 1 "\\$1" "\\$2" "\\$3" "\\$4" "\\$5" "\\$6" "\\$7"
-..
-.de RL
-.aF 1 5 "\\$1" "\\$2" "\\$3" "\\$4" "\\$5" "\\$6" "\\$7"
-..
-.de EX		\" start example
-.ta 1i 2i 3i 4i 5i 6i
-.PP
-.RS 
-.PD 0
-.ft 5
-.nf
-..
-.de EE		\" end example
-.fi
-.ft
-.PD
-.RE
-.PP
-..
-.TH FS3D 3
-.SH NAME
-fs3d \- 3D (nDFS) on/off switch
-.SH SYNOPSIS
-.EX
-#include <fs3d.h>
-
-int          fs3d(int \fIop\fP);
-.EE
-.SH DESCRIPTION
-.L fs3d
-controls and queries the
-.B 3D
-file system
-.RB (aka nDFS )
-enable state.
-.L 0
-is returned if the current process cannot mount
-.B 3D
-files.
-.I op
-may be one of:
-.TP
-.B FS3D_TEST
-Returns
-.L "FS3D_ON [1]"
-if
-.B 3D
-is enabled,
-.L "FS3D_OFF [0]"
-otherwise.
-.TP
-.B FS3D_ON
-Enables
-.B 3D
-and returns the previous
-.L 3D
-state (either
-.B FS3D_ON
-or
-.BR FS3D_OFF ).
-.TP
-\fBFS3D_LIMIT(\fIlimit\fB)\fR
-Sets the viewpath level limit to
-.IR limit .
-The previous limit is returned.
-.TP
-.B FS3D_INIT
-Re-initialize the
-.B 3D
-tables.
-Used for debugging.
-.SH "SEE ALSO"
-3D(1)

src/lib/libast/man/path.3

@@ -138,11 +138,7 @@ removed;
 .L ..
 moved to the front;
 .L /..
-preserved for super root hacks;
-.L ...
-resolved if
-.IR fs3d (3)
-is enabled.
+preserved for super root hacks.
 .I flags is the inclusive-or of:
 .TP
 .L PATH_DOTDOT
@@ -388,4 +384,4 @@ may be
 is used to avoid file conflicts but the generated path name is not created,
 so you could lose in a race.
 .SH "SEE ALSO"
-3d(1), access(2), confstr(3), fs3d(3), lstat(2), stat(2)
+access(2), confstr(3), lstat(2), stat(2)

src/lib/libast/man/preroot.3

@@ -145,7 +145,3 @@ The
 .I ast
 .IR directory (3)
 routines do this.
-.IR 3d (1)
-viewpathing does 
-.I preroot
-the right way.