Bug#182835: Fix an "xtt" font backend module crash that shows up on Linux/PPC

[Chisato Yamauchi <cyamauch@a.phys.nagoya-u.ac.jp>]

Package: xserver-xfree86
Version: 4.2.1-6
Severity: important

  A serious problem of XTT module was found on Linux/PPC architecture.
In the case of Linux/PPC, the XFree86 loading "xtt" frequently crashes.

  The cause of this crash is that XFree86 loads invaild codeconverter
module first due to broken string comparison in xttcconv.c

  Although this problem did not occur in Linux/i386, it may 
be only fortune.  The valid codeconverter module by chance was
listed by the head.

  The patch for correcting this bug is acquirable from cvs of XFree86.

  http://cvsweb.xfree86.org/cvsweb/xc/extras/X-TrueType/xttcconv.c

 956. Fix an "xtt" font backend module crash that shows up on Linux/PPC,
      related to an invalid code converter module being loaded because of
      a broken string comparison in xttconv.c (#A.1647, Chisato Yamauchi,
      Daisuke MASATSUNA).

  Thanks.