Log Message:
Changes 2.0.6:
* Fixed a memory leak in sigc::slot.
* Fixed compilation for gcc-3.4.
* Fixed compilation for Intel C++ compiler (upgraded libtool).
* Fixed project files for MSVC .Net (Timothy M. Shead).
* Fixed segfaults when compiled with MSVC .Net 2003 (moved
  all calls to new and delete into non-inline library code).
* In the compatibility module use correct bound_mem_functor
  variants for const (volatile) methods when creating a slot.
* Minor documentation fix.

Changes 2.0.5:
* Distribute pregenerated configuration header for MSVC .Net.

Changes 2.0.4:
* Fixed warnings and compiler errors in the test cases.
* Added a new test case (Murray Cumming).
* Fixed 'hello_world' example.
* Don't test optional features that fail with the Sun FORTE.
* Fixes for the Sun FORTE to compile out-of-the-box
  (Damien Carbery, Murray Cumming, Martin Schulze).
* Fixes for MSVC to build a DLL out-of-the-box (James Lin).
* Improved compiler specific configuration during 'configure'.
* Added rpm description file libsigc++-2.0.spec (Eric Bourque).
* Minor documentation improvements (Murray Cumming).