ICU Pull Request #1159.
- Set intltest's Current Working Directory correctly to enable finding
resources.
- Adds c_cpp_properties.json, primarily for the includePath settings.
- Load average takes a while to respond, specify -j24 to always limit
parallel jobs to a maximum of 24.
- make's "-l" parameter is system load average, not CPU percentage.
A load average of 90 makes my laptop unusable, changing to -l20.
- Make running all tests the unit-testing default.
- Document the adjustments that can be made in the README.
- Skip these json files when checking for copyright notices. Pure json
does not permit comments, so c_cpp_properties.json cannot have
comments.
- defines += U_DISABLE_RENAMING=1 to simplify reference following.
Rebased from 00a5d6dd5c.
