add system jar, and modify build error in eclipse
#       modified:   .classpath
#       modified:   .project
#       modified:   .settings/org.eclipse.jdt.core.prefs
#       modified:   AndroidManifest.xml
#       new file:   libs/android-common/classes.jar
#       new file:   libs/android-support-v13.jar
#       new file:   libs/core/classes.jar
#       new file:   libs/framework/classes.jar
#       modified:   src/com/android/browser/BrowserActivity.java
#       modified:   src/com/android/browser/LogTag.java
#       modified:   src/com/android/browser/provider/BrowserProvider2.java