fix some typos in AS_VAR_APPEND fallback funcs

git-svn-id: https://urjtag.svn.sourceforge.net/svnroot/urjtag/trunk@1760 b68d4a1b-bc3d-0410-92ed-d4ac073336b7

urjtag/ChangeLog

@@ -1,3 +1,7 @@
+2010-02-05  Mike Frysinger  <vapier@gentoo.org>
+
+  * acinclude.m4 (AS_VAR_APPEND): Fix a few typos.
+
 2010-02-04  Jie Zhang  <jie.zhang@analog.com>
 
   * src/tap/cable/ft2232.c (ft2232_gnice_init_common): Replace

urjtag/acinclude.m4

@@ -136,7 +136,7 @@ dnl
 dnl this was added in autoconf-2.64+
 dnl
 m4_ifndef([AS_VAR_APPEND],[dnl
-AC_DEFUN([AS_VAR_APPEND], [${$1}="${$1}${$2}"])
+AC_DEFUN([AS_VAR_APPEND], [$1=${$1}$2])
 ])dnl