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This change adds a new uiautomator test type to CTS. Includes makefile changes
to generate the package XML, as well as a skeleton test app and test.

Bug 7510316

Change-Id: I32472f737537ff7f5ebe08cd85121793b29a9680

Conflicts:

	tools/cts-java-scanner/src/com/android/cts/javascanner/DocletRunner.java
	tools/tradefed-host/src/com/android/cts/tradefed/testtype/TestPackageDef.java

This change adds a new uiautomator test type to CTS. Includes makefile changes
to generate the package XML, as well as a skeleton test app and test.

Bug 7510316

Change-Id: I32472f737537ff7f5ebe08cd85121793b29a9680

Doing mmm cts/tests/tests/hardware woudn't work, because make
didn't have BUILD_CTS_PACKAGE defined. Thus, move these core
CTS rules to a separate file called cts/build/config.mk, so it
can be included in the core build system. Finally, move the
other CTS build rule files into the build directory for
consistency as well.

This should make everybody happy I think...

Change-Id: I0792d0ba957ae31f79be0acbc9de8fc78e9374dc

buildCts.py was the central script that generated all the
test package XMLs each time CTS was built. This had a
couple problems:

1. All the XML files for ~40 packages needed to be made
   every time CTS was made. Even if those packages were
   not touched at all.

2. Couldn't shard the XML generation process across the
   available cores on a machine. A pool was added to the
   python script, but it was set to a fixed number.

This change moves the test XML generation into a
smaller Java program called "cts-java-scanner" and
the doclet it relies upon to scan the Java files
into "cts-java-scanner-doclet.jar". The output of
the scanner like "cts-native-scanner" for native EXEs
is piped to the existing cts-xml-generator to
produce the test XMLs.

New CTS specific rules replace the standard
BUILD_PACKAGE and BUILD_HOST_JAVA_LIBRARY. They just
add extra rules for the package XML. The BUILD_CTS_PACKAGE
rule also adds a rule for copying the "package.apk"
to something more like "CtsFooTestCases.apk" to the
test case out directory. All the apks, exes, and xmls
are now thrown into a "cts-testcases" directory, before
they are copied to the final CTS distribution.

This change should prevent rebuilding the XMLs
unnecessarily and make rebuilding CTS quicker while
writing tests.

There are still the libcore tests that are always rebuilt,
but they can be adapted to fit into this model someday...

Change-Id: I52a916aa37fd679057e2709bb0ccec694c9fca01