[TRAFODION-2309] Memory leak observed in Repository context

[arvind-narain]

Following changes:

1. Use REALLOCSQLMXHDLS() after each execute.
2. Avoid missing stats message in repository context
3. Handle memory leak in reprepare (delete of tmpSqlString)

[Traf-Jenkins]

Check Test Started: https://jenkins.esgyn.com/job/Check-PR-master/1276/

[Traf-Jenkins]

Test Passed. https://jenkins.esgyn.com/job/Check-PR-master/1276/

[sureshsubbiah]

Looks good @arvind-narain. Thank you. +1

[selvaganesang]

Looks good. Please check if the same issue can be encountered when T4/ODBC application uses the same handle to ExecDirect many sql statements. You can have a different JIRA if it is a potential issue

[arvind-narain]

Thanks Suresh, Selva. I'll check on T4/ODBC concern raised and create a separate JIRA if it is an issue.