Log Message:
Update to 0.300:

- On MSWin32 and cygwin, find the link libraries of dependencies and
  put them into LIBS.
- Add tests.
- Correct typos in the documentation.
- In get_makefile_vars, comment out the code that put the installed
  libraries into @OBJECT, which caused them to get deleted on
  realclean.
- In Makefile.PL, don't use the bogus package "MAIN".
- Remove debug spew.