Conditional compilation to install in 9.7 or older

[angoca]

This option could allow to have just one set of SQL files.
The documentation page is http://www.ibm.com/support/knowledgecenter/SSEPGG_9.7.0/com.ibm.db2.luw.sql.ref.doc/doc/c0056403.html
and it uses sql_ccflags

Ademas, versiones antiguas a 9.7 e inclusive la 9.7 y 10.1 estan depreciadas, por lo que el soporte de db2unit se debe enfocar a las nuevas.

[angoca]

The version 2 of db2unit should only support db2 10.5 or higher. It is not necessary to support older versiones.