Python-rsync

* Improvements to mapptr to make it work better for network IO.

* Debug trace code is compiled in unless turned off in ./configure
(although most programs will not write it out unless asked.)

* Add libhsyncinfo program to show compiled-in settings and version.

* Add test cases that run across localhost TCP sockets.

* Improved build code; should now build easily from CVS through
autogen.sh.

* Improved trace code.

* Clean up to build on sparc-sun-solaris2.8, and in the process clean
up the handling of bytes vs chars, and of building without gcc

* Reverse build scripts so that driver.sh calls the particular
script.

* Use mapptr for input.

* Implement a new structure for encoding in nad.c. It doesn't
encode at the moment, but it's much more maintainable.

* More regression cases.

* Clean up build process.

* Rewrite hs_inbuf and hs_encode to make them simpler and more
reliable.

* Test cases for input handling.

* Use the map_ptr idea for input from both streams and files.

* automake/autoconf now works cleanly when the build directory is
different to the source directory.

* --enable-ccmalloc works again.

* A much better regression suite.

* CHECKSUM token includes the file's checksum up to the current
location, to aid in self-testing.

* Various bug fixes, particularly to do with short IO returns.