Add Deskbar clock settings to Time Preferences

* Added a new Clock tab to the Time preflet. Added Clock related
controls there. They all function by communicating with Deskbar.
* Put controls in a BBox controlled by the Show clock checkbox.
This more clearly shows that all the clock settings are dependent
on the show clock setting since it doesn't matter what your clock
settings are if you don't show the clock.
* Make revert work.
* Split clock settings into it's own file and struct.
* Re-add the time zone setting.
* Remove the clock settings from the Deskbar preference window, they
are in Time now.
* Make Locale preferences accepts B_LOCALE_CHANGED message, although
not used.

Style fixes including reordering #include's in Deskbar

* Reorder includes according to the Style Guide.
* Whitespace changes, mostly making sure there are 2 newlines
between things and making sure there is 1 newline at the end of
each file.
* Make end of header files all in the style of
#endif\t/* _HEADER_GAURD_H_ */
* The one change that is not purely style is to #include <Path.h>
in DeskbarUtils.h instead of DeskbarUtils.cpp because it is used
to define entry_ref for the AddRefsToDeskbarMenu() prototype.

Filtered flat import of Oliver's svn package management branch

Bring the changes that aren't package management related and the ones
that are but don't take effect as long as they are ignored by the build
system into the master.

Summary of changes:
* Introduce private header <directories.h> with constants for a good
deal of paths that should usually be retrieved via find_directory().
* Replace hard-coded paths by using find_directory() or the
<directories.h> constants (e.g. in drivers and the kernel).
* Add find_directory() constants needed for package management.
* Add __HAIKU_ABI_NAME and B_HAIKU_ABI_NAME macros.
* src/apps/deskbar: BeMenu.* -> DeskbarMenu.*,
DeskBarUtils.* -> DeskbarUtils.*
* Change deskbar menu settings directory from ~/config/be to
~/config/settings/deskbar.
* Other smaller cleanups, changes, and fixes.

Flat commit of all changes from package-management branch in svn

Add Deskbar clock settings to Time Preferences

* Added a new Clock tab to the Time preflet. Added Clock related
controls there. They all function by communicating with Deskbar.
* Put controls in a BBox controlled by the Show clock checkbox.
This more clearly shows that all the clock settings are dependent
on the show clock setting since it doesn't matter what your clock
settings are if you don't show the clock.
* Make revert work.
* Split clock settings into it's own file and struct.
* Re-add the time zone setting.
* Remove the clock settings from the Deskbar preference window, they
are in Time now.
* Make Locale preferences accepts B_LOCALE_CHANGED message, although
not used.

Style fixes including reordering #include's in Deskbar

* Reorder includes according to the Style Guide.
* Whitespace changes, mostly making sure there are 2 newlines
between things and making sure there is 1 newline at the end of
each file.
* Make end of header files all in the style of
#endif\t/* _HEADER_GAURD_H_ */
* The one change that is not purely style is to #include <Path.h>
in DeskbarUtils.h instead of DeskbarUtils.cpp because it is used
to define entry_ref for the AddRefsToDeskbarMenu() prototype.

Filtered flat import of Oliver's svn package management branch

Bring the changes that aren't package management related and the ones
that are but don't take effect as long as they are ignored by the build
system into the master.

Summary of changes:
* Introduce private header <directories.h> with constants for a good
deal of paths that should usually be retrieved via find_directory().
* Replace hard-coded paths by using find_directory() or the
<directories.h> constants (e.g. in drivers and the kernel).
* Add find_directory() constants needed for package management.
* Add __HAIKU_ABI_NAME and B_HAIKU_ABI_NAME macros.
* src/apps/deskbar: BeMenu.* -> DeskbarMenu.*,
DeskBarUtils.* -> DeskbarUtils.*
* Change deskbar menu settings directory from ~/config/be to
~/config/settings/deskbar.
* Other smaller cleanups, changes, and fixes.

Flat commit of all changes from package-management branch in svn