Finish up cups-driverd and fix some bugs.

Finish up cups-driverd and fix some bugs.

cgi-bin/var.c:
    - Add missing include.

config.h.in:
config-scripts/cups-directories.m4:
    - Sort directory definitions and add CUPS_CACHEDIR.

cups/dir.c:
    - cupsDirRead(): Fix readdir_r() return value checks.
    - Add debug code.

cups/tempfile.c:
    - Default to /tmp instead of /var/tmp, to conform with the
      FHS.

filter/raster.c:
    - cupsRasterReadPixels(): remove extra definition of "byte"
      variable.

Makedefs.in:
    - Add CUPS_CACHEDIR definition.

scheduler/conf.c:
    - ReadConfiguration(): Clean out TempDir if it is a
      subdirectory of RequestRoot.
    - ReadConfiguration(): Log the new value of MaxClients when
      limiting.

scheduler/cups-deviced.c:
    - Add function list to header.

scheduler/cups-driverd.c:
    - Finish up "list" implementation, including new dynamic
      driver PPD interface.

scheduler/ipp.c:
    - get_ppds(): default ppd-make to "" instead of "all".

scheduler/printers.c:
    - SetPrinterAttrs(): Fix cupsPortMonitor loops.

git-svn-id: svn+ssh://src.apple.com/svn/cups/cups.org/trunk@4614 7a7537e8-13f0-0310-91df-b6672ffda945