Remove non-test from suite.

This code was trying to figure out some oddities with canWrite(). Since
it relies upon cdmUnitTestDir, remove it from the cdm suite. This fixes
the test on Travis.
Make Dorade Sweep_Date use UTC.

Also update test. This makes the test immune to the timezone where it's
run.
A few coverity fixes.
UI: Grib1DataTable;
TestGribCompressByBit (1)
Merge remote-tracking branch 'origin/4.5.3' into 4.5.3
fix covarity defects;
fix covarity defects;
ckp
coverity