Change implementations of two methods in WinGeneratorBase. These changes have no effect on the outputted makefile or project files.
Change implementations of two methods in WinGeneratorBase. These
changes have no effect on the outputted makefile or project files.

* build/generator/gen_win.py
  (WinGeneratorBase.get_win_depends,
   WinGeneratorBase.get_win_depends_impl):
    move recursive portion of gen_win_depends into
    gen_win_depends_impl to prevent unneccessary copying and sorting
    with each recursive call

  (WinGeneratorBase.get_win_libs):
    compute berkeley db library name in one place instead of three

jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion