[OPTIQ-412] RelFieldTrimmer: when trimming SortRel, the collation and trait set don't match
Bad package name in package-info was causing errors in Eclipse.
[OPTIQ-414] Bad class name in sqlline shell script
[OPTIQ-413] Add RelDataTypeSystem plugin, allowing different max precision of a DECIMAL
Fix javadoc error.
[OPTIQ-416] Execute logical RelNodes using an interpreter
[OPTIQ-376] Move SqlRun into its own artifact

Now: {groupId: "net.hydromatic", artifactId: "quidem"}
[OPTIQ-421] Add COVAR_POP and COVAR_SAMP aggregate functions

Close apache/incubator-optiq#14

Pull requests closed by other recent changes (committed already):
Close apache/incubator-optiq#12
Close apache/incubator-optiq#5
Close apache/incubator-optiq#2