[PATCH] Improve compatibility with older automake

[Charles Wilson]

* libltdl/m4/lt~obsolete.m4: Add AC_DEFUNs for
_LT_PREPARE_SED_QUOTE_VARS and _LT_PROG_ECHO_BACKSLASH.
Report by Yaakov Selkowitz.

aclocal-1.8 and older fail:
aclocal: macro `_LT_PREPARE_SED_QUOTE_VARS' required but not defined
aclocal: macro `_LT_PROG_ECHO_BACKSLASH' required but not defined
autoreconf-2.63: aclocal failed with exit status: 1

Tested by running aclocal-1.8 successfully, but didn't do a full
bootstrap. Still, the fix seems obvious...okay to push?

Chuck

---
 libltdl/m4/lt~obsolete.m4 |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/libltdl/m4/lt~obsolete.m4 b/libltdl/m4/lt~obsolete.m4
index b60bbd2..5f6a956 100644
--- a/libltdl/m4/lt~obsolete.m4
+++ b/libltdl/m4/lt~obsolete.m4
@@ -92,3 +92,5 @@ m4_ifndef([AC_LIBTOOL_CONFIG],                
[AC_DEFUN([AC_LIBTOOL_CONFIG])])
 m4_ifndef([_LT_AC_FILE_LTDLL_C],       [AC_DEFUN([_LT_AC_FILE_LTDLL_C])])
 m4_ifndef([_LT_REQUIRED_DARWIN_CHECKS],        
[AC_DEFUN([_LT_REQUIRED_DARWIN_CHECKS])])
 m4_ifndef([_LT_AC_PROG_CXXCPP],                
[AC_DEFUN([_LT_AC_PROG_CXXCPP])])
+m4_ifndef([_LT_PREPARE_SED_QUOTE_VARS],        
[AC_DEFUN([_LT_PREPARE_SED_QUOTE_VARS])])
+m4_ifndef([_LT_PROG_ECHO_BACKSLASH],   [AC_DEFUN([_LT_PROG_ECHO_BACKSLASH])])
-- 
1.6.1.2