Description of problem:
When the system time is changed the yum history order follows the system time and not the order how the commands were performed.

Version-Release number of selected component (if applicable):
yum-3.2.29-27.el6.noarch

How reproducible:
always

Steps to Reproduce:

1. Clean the history database and install a package
# yum history new
# date
Mon Apr  3 10:02:10 CEST 2056
# yum -y install zsh

2. Change the system time back and install another package
# date 040306`date +%M`
Mon Apr  3 06:02:00 CEST 2056
# yum -y install shed

3. Change the system time again back to the original and install another package
# date 040310`date +%M`
Mon Apr  3 10:02:00 CEST 2056
# yum -y install xs

4. Check the history
# yum history
Loaded plugins: product-id, security, subscription-manager
Updating certificate-based repositories.
ID     | Login user               | Date and time    | Action(s)      | Altered
-------------------------------------------------------------------------------
     1 | root <root>              | 2056-04-03 10:02 | Install        |    1   
     3 | root <root>              | 2056-04-03 10:02 | Install        |    1   
     2 | root <root>              | 2056-04-03 06:02 | Install        |    1   
Warning: RPMDB altered outside of yum.

5. Display the info about the "last" history entry
# yum history info
Loaded plugins: product-id, security, subscription-manager
Updating certificate-based repositories.
Transaction ID : 1
Begin time     : Mon Apr  3 10:02:30 2056
Begin rpmdb    : 655:dcb936703b97c9addadc75e7817d771f302efa27
End time       :            10:02:34 2056 (4 seconds)
End rpmdb      : 654:d5f844407840619c1cb3360e069420dc42156b9d **
User           : root <root>
Return-Code    : Success
Command Line   : -y install zsh
Transaction performed with:
    Installed     rpm-4.8.0-19.el6.x86_64                   @anaconda-RedHatEnterpriseLinux-201111171049.x86_64/6.2
    Installed     subscription-manager-0.96.17-1.el6.x86_64 @anaconda-RedHatEnterpriseLinux-201111171049.x86_64/6.2
    Installed     yum-3.2.29-22.el6.noarch                  @anaconda-RedHatEnterpriseLinux-201111171049.x86_64/6.2
    Installed     yum-metadata-parser-1.1.2-16.el6.x86_64   @anaconda-RedHatEnterpriseLinux-201111171049.x86_64/6.2
Packages Altered:
    Install zsh-4.3.10-4.1.el6.x86_64 @rhel62s

6. Try to redo/undo the last transaction
# yum history undo last
Loaded plugins: product-id, security, subscription-manager
Updating certificate-based repositories.
Undoing transaction 1, from Mon Apr  3 10:02:30 2056
    Install zsh-4.3.10-4.1.el6.x86_64 @rhel62s

7. 
# yum history rollback 3
Loaded plugins: product-id, security, subscription-manager
Updating certificate-based repositories.
Rollback to transaction 3, from Mon Apr  3 10:02:08 2056
  Undoing the following transactions: 1, 2, 3
    Install shed-1.15-5.el6.x86_64         @epel
    Install xs-0.1-2.git9c19777.el6.x86_64 @epel
    Install zsh-4.3.10-4.1.el6.x86_64      @rhel62s

# yum history rollback 2
Loaded plugins: product-id, security, subscription-manager
Updating certificate-based repositories.
Rollback to transaction 2, from Mon Apr  3 06:02:18 2056
  Undoing the following transactions: 1, 2, 3
    Install shed-1.15-5.el6.x86_64         @epel
    Install xs-0.1-2.git9c19777.el6.x86_64 @epel
    Install zsh-4.3.10-4.1.el6.x86_64      @rhel62s

# yum history rollback 1
Loaded plugins: product-id, security, subscription-manager
Updating certificate-based repositories.
Rollback to current, nothing to do


Actual results:
4. The history list is ordered by actual system time, while the "natural order" would be by ID, i.e. in which order each action took place.
5. The top entry from list is picked up, i.e. the one with newest system time, but not the one which was last performed. Event though it is not explicitly mentioned in man page or other document that this command will pick the last performed action, I'd say this is what people expect.
6. Again the last transaction by system time is picked, and not with highest ID. Man page says "Eg. if you’ve done 250 transactions, "last" refers to transaction 250 ..."
7. The rollback is screwed up too. Rollback to 2 and 3 seems to do the same and it is including itself too. Rollback to 1 is taken as the last transaction.

Expected results:
4. The history is ordered by transaction ID.
5. The history entry with highest transaction ID is shown.
6. The history entry with highest transaction ID is undone/redone..
7. As explained in man page: rollback to 1 rolls back 2 and 3, etc.

Additional info: