bootstrap.sh fails on my FC6 box which has autoconf 2.59.
Steps to reproduce:

$ tar -xvzf asterisk-1.4.0.tar.gz
$ cd asterisk-1.4.0
$ patch -p1 < ../asterisk-1.4-svn53293.patch
$ perl -pi -e's,2.60,2.59,' configure.ac
$ ./bootstrap.sh

Error messages:

[patrick@localhost asterisk-1.4]$ ./bootstrap.sh
Generating the configure script ...
configure.ac:25: error: possibly undefined macro: AC_USE_SYSTEM_EXTENSIONS
      If this token and others are legitimate, please use m4_pattern_allow.
      See the Autoconf documentation.
configure:3791: error: possibly undefined macro: _AC_PATH_PROG_FEATURE_CHECK
configure:3792: error: possibly undefined macro: _AC_FEATURE_CHECK_LENGTH

I also tried autoconf and autoreconf in the top dir and they all give
the same errors. After ./bootstrap.sh I tried the configure command
which generated several errors:

[patrick@localhost asterisk-1.4]$ ./configure
checking build system type... i686-pc-linux-gnu
checking host system type... i686-pc-linux-gnu
./configure: line 1460: AC_USE_SYSTEM_EXTENSIONS: command not found
checking for uname... /bin/uname
checking for gcc... gcc
checking for C compiler default output file name... a.out
checking whether the C compiler works... yes
checking whether we are cross compiling... no
checking for suffix of executables... 
checking for suffix of object files... o
checking whether we are using the GNU C compiler... yes
checking whether gcc accepts -g... yes
checking for gcc option to accept ANSI C... none needed
checking for g++... g++
checking whether we are using the GNU C++ compiler... yes
checking whether g++ accepts -g... yes
checking how to run the C preprocessor... gcc -E
checking how to run the C++ preprocessor... g++ -E
checking for a sed that does not truncate output... ./configure: line 3791: syntax error near unexpected token `SED,'
./configure: line 3791: `     _AC_PATH_PROG_FEATURE_CHECK(SED, sed gsed,'