IFS in install-sh and mkinstalldirs

[Ralf Wildenhues]

Posix allows shells to have IFS unset at startup (and some older Debian
ash versions -- IIRC distributed with RedHat -- do this); unset IFS is
fine since the shell is required to behave as if it were set to space
tab newline.  However, set but empty IFS is different: it disables field
splitting:  oIFS=$IFS; ...; IFS=$oIFS.

The patch below fixes this for install-sh and mkinstalldirs.  OK?

Cheers,
Ralf

        * lib/install-sh: Initialize IFS, so field splitting isn't
        turned off later.
        * lib/mkinstalldirs: Likewise.

Index: lib/install-sh
===================================================================
RCS file: /cvs/automake/automake/lib/install-sh,v
retrieving revision 1.32
diff -u -r1.32 install-sh
--- lib/install-sh      25 Apr 2006 20:13:37 -0000      1.32
+++ lib/install-sh      2 May 2006 19:47:15 -0000
@@ -1,7 +1,7 @@
 #!/bin/sh
 # install - install a program, script, or datafile
 
-scriptversion=2006-04-25.22
+scriptversion=2006-05-02.22
 
 # This originates from X11R5 (mit/util/scripts/install.sh), which was
 # later released in X11R6 (xc/config/util/install.sh) with the
@@ -42,6 +42,10 @@
 # from scratch.  It can only install one file at a time, a restriction
 # shared with many OS's install programs.
 
+nl='
+'
+IFS=" ""       $nl"
+
 # set DOITPROG to echo to test this script
 
 # Don't use :- since 4.3BSD and earlier shells don't like it.
Index: lib/mkinstalldirs
===================================================================
RCS file: /cvs/automake/automake/lib/mkinstalldirs,v
retrieving revision 1.19
diff -u -r1.19 mkinstalldirs
--- lib/mkinstalldirs   29 Jun 2005 21:08:19 -0000      1.19
+++ lib/mkinstalldirs   2 May 2006 19:47:15 -0000
@@ -1,7 +1,7 @@
 #! /bin/sh
 # mkinstalldirs --- make directory hierarchy
 
-scriptversion=2005-06-29.22
+scriptversion=2006-05-02.22
 
 # Original author: Noah Friedman <address@hidden>
 # Created: 1993-05-16
@@ -11,6 +11,9 @@
 # bugs to <address@hidden> or send patches to
 # <address@hidden>.
 
+nl='
+'
+IFS=" ""       $nl"
 errstatus=0
 dirmode=