icu - security update

Several vulnerabilities were discovered in the International Components
for Unicode (ICU) library:

• CVE-2013-1569
  Glyph table issue.
• CVE-2013-2383
  Glyph table issue.
• CVE-2013-2384
  Font layout issue.
• CVE-2013-2419
  Font processing issue.
• CVE-2014-6585
  Out-of-bounds read.
• CVE-2014-6591
  Additional out-of-bounds reads.
• CVE-2014-7923
  Memory corruption in regular expression comparison.
• CVE-2014-7926
  Memory corruption in regular expression comparison.
• CVE-2014-7940
  Uninitialized memory.
• CVE-2014-9654
  More regular expression flaws.

For Debian 6 Squeeze, these issues have been fixed in icu version
4.4.1-8+squeeze3.