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/cmd/ksh93/Mamfile

@@ -232,10 +232,6 @@ meta FEATURE/dynamic features/%>FEATURE/% features/dynamic dynamic
 make features/dynamic
 done features/dynamic
 exec - iffe -v -c '${CC} ${mam_cc_FLAGS} ${CCFLAGS}   ${LDFLAGS} ' ref ${mam_cc_L+-L.} ${mam_cc_L+-L${INSTALLROOT}/lib} -I${PACKAGE_ast_INCLUDE} -I${INSTALLROOT}/include ${mam_libdll} ${mam_libcoshell} ${mam_libcmd} ${mam_libast} ${mam_libm} ${mam_libnsl} : run features/dynamic
-make ${PACKAGE_ast_INCLUDE}/fs3d.h implicit
-prev ${PACKAGE_ast_INCLUDE}/ast_fs.h implicit
-prev ${PACKAGE_ast_INCLUDE}/prototyped.h implicit
-done ${PACKAGE_ast_INCLUDE}/fs3d.h dontcare
 prev ${PACKAGE_ast_INCLUDE}/dlldefs.h implicit
 done FEATURE/dynamic dontcare generated
 make FEATURE/options implicit

src/cmd/ksh93/README

@@ -52,8 +52,6 @@ The options have the following defaults and meanings:
     FILESCAN     on  Experimental option that allows fast reading of files
                      using while < file;do ...; done and allowing fields in
                      each line to be accessed as positional parameters.
-    FS_3D        off For use with 3-D file system.  Enabled automatically for
-                     systems with dynamic linking.
     KIA          off Allow generation of shell cross reference database with -I.
     MULTIBYTE    on  Multibyte character handling.  Requires mblen() and
                      mbctowc().

src/cmd/ksh93/bltins/misc.c

@@ -26,8 +26,6 @@
  * let expr...
  * . file [arg...]
  * :, true, false
- * vpath [top] [base]
- * vmap [top] [base]
  * wait [job...]
  * shift [n]
  *

src/cmd/ksh93/data/builtins.c

@@ -2030,11 +2030,6 @@ _JOB_
 "[+SEE ALSO?\bjobs\b(1), \bps\b(1)]"
 ;
 
-#if SHOPT_FS_3D
-    const char sh_optvpath[]	= " [top] [base]";
-    const char sh_optvmap[]	= " [dir] [list]";
-#endif /* SHOPT_FS_3D */
-
 const char sh_optwhence[] =
 "[-1c?\n@(#)$Id: whence (AT&T Research) 2007-04-24 $\n]"
 USAGE_LICENSE

src/cmd/ksh93/features/poll

@@ -68,7 +68,6 @@ tst	pipe_socketpair note{ use socketpair() for peekable pipe() }end execute{
 }end
 tst	socketpair_devfd note{ /dev/fd/N handles socketpair() }end execute{
 	#include <ast.h>
-	#include <fs3d.h>
 	#include <sys/types.h>
 	#include <sys/socket.h>
 	int main()
@@ -76,7 +75,6 @@ tst	socketpair_devfd note{ /dev/fd/N handles socketpair() }end execute{
 		int		devfd;
 		int		n;
 		int		sfd[2];
-		fs3d(FS3D_OFF);
 		close(0);
 		open("/dev/null", O_RDONLY);
 		if ((n = open("/dev/fd/0", O_RDONLY)) < 0)

src/cmd/ksh93/include/defs.h

@@ -106,7 +106,6 @@ struct limits
 	int		ngroups_max;	/* maximum number of process groups */
 	unsigned char	posix_version;	/* posix version number */
 	unsigned char	posix_jobcontrol;/* non-zero for job control systems */
-	unsigned char	fs3d;		/* non-zero for 3-d file system */
 };
 
 #ifndef SH_wait_f_defined