Support TAU's SQLite plugin

[Nicholas Chaimov]

TAU now has a plugin which outputs performance profiles in SQLite format. This should be usable from TAU Commander.

Implementing this will involve:

• Downloading and building the SQLite dependency if necessary
• Passing -sqlite3 path to TAU configure script
• Support sqlite as a data format in the Measurement
• Specifying the sqlite format when running Experiments
• Expecting the output file (so that we don't report e.g. that zero profiles were written)

[Nicholas Chaimov]

Implemented in #380.