(ITS#6927) smbk5pwd handles DST incorrectly

[ryans@aweber.com]

Full_Name: Ryan Steele
Version: 2.4.23
OS: Ubuntu Server 10.04 (Lucid)
URL: ftp://ftp.openldap.org/incoming/
Submission from: (NULL) (207.106.239.81)


The smbk5pwd overlay (I tested with an older version and HEAD) seems to handle
Daylight Savings Time incorrectly when it comes to the sambaPwdLastSet
attribute, populating it with a value that does not take DST into account.  As
an example, consider the following attributes from one of the entries in my
directory:

pwdChangedTime: 20110502160329Z
sambaPwdLastSet: 1304352209

Obviously, pwdChangedTime specifies the timestamp:

Mon May  2 16:03:29 EDT 2011

On the other hand, sambaPwdLastSet specifies the timestamp as being an hour
later, as calculated with the 'date' command (date -d'1970-01-01 1304352209
sec'):

Mon May  2 17:03:29 EDT 2011

Right now we're in DST on the east coast, which is GMT -0400.  This would mean
that pwdChangedTime is correct, but sambaPwdLastSet is still incorrectly
calculating results using GMT -0500.