Dalvik is dead, long live Dalvik! DO NOT MERGE

croot
cd libcore
repo start dalvik-is-dead-long-live-dalvik .
repo sync -c .
git rm -r libdvm
git add JavaLibrary.mk (after removing libdvm references, adding explict core-libart references)
git add Docs.mk (after replacing references to libdvm with libart)
git add benchmarks/Android.mk (after adding explict core-libart references)
git add Android.mk (after removing dalvik-host target)
git commit -a -m 'Dalvik is dead, long live Dalvik! DO NOT MERGE'

Bug: 14298175
Change-Id: I0e7a3ce47e0b6e3a7b15006a6d17d103d23e8064

Conflicts:
	Android.mk
	Docs.mk
	JavaLibrary.mk
	benchmarks/Android.mk
	libdvm/src/main/java/dalvik/system/VMRuntime.java
	libdvm/src/main/java/java/lang/Class.java
	libdvm/src/main/java/java/lang/Object.java
	libdvm/src/main/java/java/lang/String.java
	libdvm/src/main/java/java/lang/Thread.java
	libdvm/src/main/java/java/lang/reflect/Constructor.java
	luni/src/main/java/java/lang/ref/Reference.java