Create top-level configure
Use top_srcdir instead of top_builddir
Add symlinks to replace SVN externals
Cast to avoid compile error
Separate package-level and project-level make logic.  Create buildstamp data at package level.
Add sipXcallLib to main Makefile.am
Add files required by autotools
m4 macros: adapt for top level package layout
MpAudioUtils.cpp: add missing include statement
Various improvements: disable sipviewer by default, search for librt, modernise autotools syntax, add m4 and build-aux directories, removing custom paths for PCRE and OpenSSL
Using headers from related projects in source tree.  Simplify PCRE and OpenSSL inclusion.
Use AM_CONDITIONAL for codecs to ensure inclusion in dist
Use AM_CONDITIONAL for sipxunit to ensure inclusion in dist
Adjust file lists to ensure make dist works
Remove duplicated filenames in list of headers
Define custom installation dir codeclibdir for codec plugins
Remove references to RT_LIBS
Remove checking message for DECLARE_CODECS_STAFF
Remove extra arguments to AC_DEFUN and extra closing brackets
Disable CHECK_LIBRT from configure