The command 'runtest --path <path to parent folder>'
is intended to find and build all tests contained within that parent folder.
However, the runtest logic was flawed in that it assumed building a parent
folder's Android.mk file would build all sub-directories.
This commit changes runtest to explictly look for the rule to build
sub-dir makefiles when creating the set of dirs to build.
Change-Id: Ia7f2172c1be79be8589be5f435fc4fb32569c994
This supports specifying a file system path to test(s) to run. The path can be
a java test class file, a java package directory, or a parent directory
containing many tests.
This change allows users to run tests independently from test_defs.xml.
BUG 2133198
