Improve bfCheckJavaPath performance testing

This commit should fix instabilites in the daily build of TestCheckJavaPath.
Successive calls to bfCheckJavaPath are not treated as independent. More
precisely, performance is only assessed for the third call and onwards.
replace ellipses
adjust classes that generate dataset-table.txt
merge dev_4_4 -D org -I include -E exclude: PR 673 (Make configuration file suffix configurable)
merge dev_4_4 -D org -I include -E exclude: PR 710 (Data test updates (rebased onto dev_4_4))
merge dev_4_4 -D org -I include -E exclude: PR 746 (CellWorx: ignore thumbnails and missing channel names)
merge dev_4_4 -D org -I include -E exclude: PR 768 (Improve bfCheckJavaPath performance testing (rebased onto dev_4_4))
merge dev_4_4 -D org -I include -E exclude: PR 769 (use Unicode ellipses)