Many features and changes ported from Debian

 * Add alaw support. This improves interoperability with the
   asterisk tool

 * Add a warning for ALSA audio output if it underruns, so the user
   knows that he should change the audio output to avoid audio quality
   issues.

 * Remove ESD (ESounD) audio output, as it has been deprecated since
   2009

 * Add an optional PulseAudio module (see it as a replacement for ESD)

 * Check fread return value to avoid crashes when dealing with malformed
   files or data (fixes Debian bugs #715728, #716193, #716464, #716464,
   #716618).

 * Updated copyright license at base_class/string/regexp.h and
   base_class/string/EST_strcasecmp.c due to the change from 4-clause
   BSD license to 3-clause BSD license of all the University of
   California copyrights

 * Set g++ (currently gcc) as the C++ default in
   config/compilers/gcc_defaults.mak

 * Fix mismatched "new[]" operator with "delete" operator (the operator
   "delete[]" should be used instead)

 * Add some template instantiations for building with gcc-4.7 and
   clang-3.0

 * Add a seeking and reading interface to the EST_TokenStream class when
   using C++ istreams (required by a festival patch)

 * Add to the EST_WaveFile class the option to write the header of the
   wave output file or only the data section (required by a festival
   patch)

 * Update the configure.in file to replace deprecated autoconf functions

 * Documentation can be now built again, using xsltproc and doxygen.