* Backport Windows installer improvements from Tomcat 7.0.5.

      - Use *modern* types of nsis install/uninstall icons (r999976, mturk)
  - Create service-install.log file during installation with params that were used to invoke commons daemon. (r1003840, mturk; r1035083,r1035088 kkolinko)
  - Allow 32-bit or 64-bit JVMs to be selected when installing on a 64-bit platform. (r1027504, markt; r1033856,r1033882 kkolinko)
  - Reimplemented the Windows installer GUI using nsDialogs and MUI2 libraries, instead of deprecated InstallOptions. The *.ini files are no more used. All is specified in the nsi script. (r1034911, kkolinko)
  - Use new admin-gui and manager-gui roles for the user (r982151, mturk)
  - Add a field to display/edit the roles for the user that we add to tomcat-user.xml
  - The roles are calculated depending on what webapps are installed (only manager, vs. host-manager, vs. both of them).
  - Do not display "username", "password", "roles" fields when neither manager nor host-mana