Log message:
Remove USE_X11BASE and X11PREFIX.

Log message:
Remove xextproto/buildlink3.mk in most cases where it occurs with
libXext/buildlink3.mk, now that it is included there.
Leave the places where its API version is set or variables from it
are used directly (about 3 packages).

Log message:
Drop PKG_DESTDIR_SUPPORT setting, "user-destdir" is default these days.

Log message:
Fix broken destdir install. (hi joerg)

Log message:
DESTDIR support

Log message:
Resign as maintainer of all the packages which I'm no longer using.

Log message:
Whitespace cleanup, courtesy of pkglint.
Patch provided by Sergey Svishchev in private mail.

Log message:
- fine grained X11 dependencies for packages which have either USE_IMAKE
  or USE_X11BASE set, but don't include mk/x11.buildlink3.mk directly or
  via buildlink3.mks
- introduce BUILDLINK_PREFIX.libXpm as alias for BUILDLINK_PREFIX.xpm
  in the !modular case
- fix some cases where the check for libX11 couldn't work at all by using
  C++ for compilation without including the proper headers

Verified using a full X11_TYPE=xorg bulk build without additional
breakage. Discussed with salo@, wiz@ and send to packages@ for feedback.

Log message:
Mechanically replace all includes of buildlink3.mk of the following
packages with the modular Xorg equivalent. Those are falling back
to the old location by default, so this commmit doesn't change
dependencies.

graphics/xpm ==> x11/libXpm
fonts/Xft2 ==> x11/libXft
x11/Xfixes ==> x11/libXfixes
x11/xcursor ==> x11/libXcursor
x11/Xrender ==> x11/libXrender
x11/Xrandr ==> libXrandr

Log message:
Update MASTER_SITES and/or HOMEPAGE, from Sergey Svishchev.