Updated libXfont to 1.5.2.

Maintenance branch release, primarily for bdftopcf's benefit as it's
the only thing that really needs the Xfont1 API. (xfs uses it too, I
believe, but could be ported to Xfont2). If someone wanted to step up
and merge Xfont1 into bdtopcf directly, that'd be great.

Adam Jackson (1):
      libXfont 1.5.2

Alan Coopersmith (1):
      doc: add a couple olinks to fsproto & xfs-design docs

Benjamin Tissoires (1):
      bdfReadCharacters: Allow negative DWIDTH values

Jeremy Huddleston Sequoia (6):
      stubs: Add missing externs for declarations in the NO_WEAK_SYMBOLS && PIC stubs resolution
      Use NO_WEAK_SYMBOLS instead of -flat_namespace
      FreeType: Correct an allocation size
      bitmap: Bail out on invalid input to FontFileMakeDir instead of calling calloc for 0 bytes
      fserve: Silence a -Wformat warning
      fserve: Fix a buffer read overrun in _fs_client_access

Keith Packard (1):
      Fix warnings

Thomas Klausner (1):
      Fix is*() usage.


(wiz)