Moderate: cyrus-sasl security and bug fix update

[2.1.19-14]

• Related: bz250732 Fixed a conflict with an earlier test patch

[2.1.19-13]

• Related: bz250732 Fixed uninitialized stack variable causing segfault

[2.1.19-12]

• Resolves: bz250732 sasl-sample-server crashes with null realm

[2.1.19-11]

• Resolves: bz243910 krb5-libs are not thread-safe
• Resolves: bz244075 Memory leaks in digest-md5 plugin
• Added missing build dependency for groff to spec file

[2.1.19-10]

• reapply fixes for #157012, #190113

[2.1.19-9]

• temporarily back out the fixes for #157012, #190113

[2.1.19-8]

• add unapplied patches which make the DIGEST-MD5 plugins omit the realm
  argument when the environment has
  set to a
  non-zero value, for testing purposes
• add missing build dependency on zlib-devel (#190113)

[2.1.19-7]

• make v1 of the sasl library use /dev/urandom instead of /dev/random, as
  we do in v2 of the library at compile-time (#157012)

[2.1.19-6]

• backport fix for segfault in the digest-md5 module in cases when the
  client didn’t supply a realm (#189814, CVE-2006-1721)