Use CRM_Utils_SQL_TempTable to drop and create table.

[mfb]

Overview

We could use the TempTable InterfaceI to create export table.

Before

SQL queries are used to drop and create table.

After

Use TempTable methods instead.

[civibot]

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[eileenmcnaughton]

I'm OK merging this if jenkins passes it - this temp table has very heavy code coverage (even though IMHO it should not be created)

[eileenmcnaughton]

I've added 'has-test' - this PR doesn't add a test so maybe it should be 'ok-without-test' but the test cover on that table is extensive

[mfb]

jenkins retest this please