All the needed bits from the userland include files just deleted from the repo
have been added to the new include file, hubcap.h. All the c files and
the kernel include files have been modified to use hubcap.h, instead of
the myriad of userland files, to get what they need. There was either
nothing, or almost nothing, that could be gained from trying to
whittle down pvfs2-debug.h, so I left it as part of the project.

modified:   acl.c
modified:   dcache.c
modified:   devpvfs2-req.c
modified:   dir.c
modified:   downcall.h
modified:   file.c
new file:   hubcap.h
modified:   inode.c
modified:   namei.c
modified:   pvfs2-bufmap.c
modified:   pvfs2-bufmap.h
modified:   pvfs2-cache.c
modified:   pvfs2-dev-proto.h
modified:   pvfs2-kernel.h
modified:   pvfs2-mod.c
modified:   pvfs2-proc.c
modified:   pvfs2-utils.c
modified:   super.c
modified:   symlink.c
modified:   upcall.h
modified:   waitqueue.c
modified:   xattr-default.c
modified:   xattr-trusted.c
modified:   xattr.c