Non-essential tooling improvements

Add a new wrapper for executing the time zone tree visualization tool,
provide information about the wrapper in the README.android, and add some more
helpful logging the the tzlookup.xml generator.

Change how the tools are built / executed.
Add test_suite tags and test mappings to get the host tool tests running
automatically.

Test: Ran the tools
Test: atest tztools_common_tests telephonylookup_generator_tests tzlookup_tests
Change-Id: If1a19d2470bbec5d3132d66427e0cfd40ce60cc0
11 files changed