Split several make roottest directories.

[pcanal]

Split:

• roottest-io-evolution subdirectories
• roottest-io-evolution itself in 3 parts
• • numerical_evolution
• • stl_evolution
• • the rest
• roottest-root-io-json
• roottest-root-io-datamodelevolution
• roottest-root-io-newClassDef

The ROOT companion PR fix an issue that made roottest-root-io-evolution-stl_evolution

After this update, the top 15 roottest-.*-make time consumers are:

115/123 Test #1824: roottest-root-io-newstl-make ...........................   Passed  609.78 sec
114/123 Test #2369: roottest-root-tree-addresses-make ......................   Passed  398.07 sec
112/123 Test #2450: roottest-root-treeproxy-make ...........................   Passed  305.51 sec
113/123 Test #1728: roottest-root-io-evolution-numerical_conversions-make ..   Passed  263.90 sec
111/123 Test #1722: roottest-root-io-evolution-make ........................   Passed  260.71 sec
110/123 Test #2395: roottest-root-tree-evolution-make ......................   Passed  228.12 sec
107/123 Test #2430: roottest-root-treeformula-array-make ...................   Passed  139.64 sec
106/123 Test #2372: roottest-root-tree-branches-make .......................   Passed  137.46 sec
109/123 Test #1733: roottest-root-io-evolution-versions-make ...............   Passed  135.68 sec
104/123 Test #1831: roottest-root-io-rootcint-make .........................   Passed  134.20 sec
101/123 Test #1936: roottest-root-io-vararyobj-make ........................   Passed  122.92 sec
 97/123 Test #1830: roottest-root-io-references-make .......................   Passed  118.27 sec
 94/123 Test #2408: roottest-root-tree-friend-make .........................   Passed  111.25 sec
 91/123 Test #2442: roottest-root-treeformula-parse-make ...................   Passed  108.10 sec
105/123 Test #2416: roottest-root-tree-reader-make .........................   Passed   93.79 sec

[hageboeck]

I didn't manage to follow all macros (or the Makefiles), but this looks like this will run the tests in parallel.