PTF IP00024 fixes APAR IC62423

The fix handles the following situation:

High volume parallel queries may cause the DB2 Net Search Extender error:
"CTE0101 A SEARCH ENGINE OPERATION FAILED. REASON CODE: "7",".


Apply the fix only to DB2 Net Search Extender installations on DB2 9.5 FP3.

Installation on AIX:
====================

1) as instance owner:                                                      
    - db2text stop
    - db2stop

2) as root:
    - slibclean
    - change to directory <install-path-of-db2>/lib64 (e.g. /opt/IBM/db2/V9.5/lib64)
    - make a backup copy of the lib: libitxc5032.a
    - copy the new lib into the directory <install-path-of-db2>/lib64
    - check the permissions and ownership of the new lib. The libs needs permission 755
      and needs to belong to the owner and group bin.
     (e.g. -rwxr-xr-x    1 bin      bin         1738377 Aug 13 23:24 libitxc5032.a)
    - slibclean

3) as instance owner:
    - db2start
    - db2text start
    - db2text level should now contain COSLibR5-25b