[PATCH 00/18] xextproto repository cleanup

[Peter Hutterer]

This is a patch series to clean up the xextproto repository.

The problem with it now is that it mixes library headers with protocol
header. This is partly mitigated by amusing requirements to define random
variables before including the file to ensure you're only including the Xlib
header part, or just the protocol part, or random other bits.

The runner-up is XShm.h, which includes the few lines that apply to the
server in an #else clause. So the protocol headers have include lines for
server internal headers.
http://cgit.freedesktop.org/xorg/proto/xextproto/tree/XShm.h

The winner of this week's grand prize is sync.h, which declares Xlib
functions, then #defines macros with the same name so that callers need to
undef them at will to get the functions instead of the macros. I don't know
the purpose of this and I didn't try to fix it, at this point I started
stabbing myself to make the pain go away.
http://cgit.freedesktop.org/xorg/proto/xextproto/tree/sync.h

Anyway. The approach in this patch series is the following:
for any header file Foo.h, if Foo.h is a (or contains) Xlib headers
- remove protocol constants into a Fooconst.h
- move protocol structures into a Foostr.h (or add to it if exists)
- move the leftover Foo.h to libXext/include and include Fooconst.h from the
  file.

So any client users of Foo.h should be mostly fine, they get the same
defines. In the server there was more work, since the server now needs to
include Fooconst.h and Foostr.h instead of Foo.h
This also affects at least xfixesproto that has a #include <shape.h>.

This is in theory anyway, there will be breakages in some clients. This is a
tricky situation, since getting it to a point where there are no breakages
on the client side is quite hard given the combinations of ifdefs possible.

Since this is an API break only, not an ABI break, I propose pushing this to
git and bumping to a pre-relase for xextproto-7.1, then fixing up the
libraries as they come.

Comments? Review of the patches would be much appreciated.

Cheers,
  Peter