configure.in loses with autoconf 2.59

[Dave Love]

The `extrasub' variable used in configure is undocumented.  Using it
(a) appears to have no effect on the Makefiles generated (b) loses
with autoconf 2.59.  The lossage involves messages like this from
config.status

  sed: -e expression #1, char 16: Extra characters after command
  bash: srcdir: command not found

due to it running a shell command of the form

  sed "... $(srcdir) ..."


2004-04-21  Dave Love  <address@hidden>

        * configure.in: Don't use `extrasub'.

Index: configure.in
===================================================================
RCS file: /cvsroot/emacs/emacs/configure.in,v
retrieving revision 1.365
diff -u -p -u -r1.365 configure.in
--- configure.in        21 Mar 2004 14:31:21 -0000      1.365
+++ configure.in        21 Apr 2004 13:42:40 -0000
@@ -170,15 +170,6 @@ if test `pwd` != `(cd ${srcdir} && pwd)`
    use GNU make.  If you do not have GNU make, then you must
    now do `make distclean' in ${srcdir},
    and then run $0 again.]])
-
-[extrasub='/^VPATH[     ]*=/c\
-vpath %.c $(srcdir)\
-vpath %.h $(srcdir)\
-vpath %.y $(srcdir)\
-vpath %.l $(srcdir)\
-vpath %.s $(srcdir)\
-vpath %.in $(srcdir)\
-vpath %.texi $(srcdir)']
 fi
 
 #### Given the configuration name, set machfile and opsysfile to the