Update to Squeak 4.4
Prompted by Rhialto in private mail.

Squeak 4.4 - Ulam Spiral

Changelog:
* Cleanup and simplification of Morphic text editing
* Add host window support, letting you display things
  in a host window. (Currently only on Windows and Mac.)
* Bugfixes in the Compiler, Parser and Debugger toolchain
* Stub support for the ability to evolve the bytecode set
* Better printing of Floats, hashing of DateAndTimes
* ChangeSorter improvements
* ToolBuilder improvements
* Merged network improvements from Etoys
* Monticello browsing can now group versions by branch,
  making tracking of parallel developments easier
* Decreased coupling between core packages
* IPv6 support (if your VM provides it)

(asau)