loadXPaths can be made much faster by changing "false" to "true" here in XPathTable.java:
Resulting test times in cldr-apps.TestAll.java:
TestBasicFactory (4.731s) (was 20.468s)
TestBasicVote (3.017s) (was 22.901s)
TestDenyVote (2.091s) (was 27.819s)
TestVettingWithNonDistinguishing (0.978s) (was 13.863s)
It looks like the "Debug: add paths one by one" version wasn't intended to stay that way in production.