ENHANCEMENT: activitycreator generates 'tests' project for instrumentation.

activitycreator script is enhanced to generate 'tests' project along with the main project. The current behavior of generating Activity is extended by generating ActivityTest in 'tests/src' folder. The 'tests' folder follows the example provided asis in 'ApiDemos'. ApiDemos was used as reference project to mimic the project layout for building tests using Instrumentation.

From 'tests' project, type:
    "adb shell am instrument -w [your.package].tests/android.test.InstrumentationTestRunner"
to run all tests using Android InstrumentationTestRunner.

NOTE: 'tests' is a separate AndroidProject by all means. It has its own AndroidManifest.xml, build.xml, src, res etc.,

AMEND:
	Fixed style issues, javadoc
	Fixed build.template to generate tests/build.xml
	Removed build.tests.template since its obsolete now.
5 files changed