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Merge ART from AOSP to lmp-preview-dev.

Change-Id: I0f578733a4b8756fd780d4a052ad69b746f687a9

This recreates old Dalvik behavior for older target sdk versions,
but will still pass null for newer ones.

Bug: 13247236

Change-Id: I663c44f729dd173b47da692a753b986daa0463e9

Previously we were using MAP_FIXED which introduced a serious race
condition if MAP_32BIT was set since it would possibly overwrite
an existing map at the address which we determined was free with
msync. There was a window of time after we had msynced a page where
another thread could map something at that page. The new method
avoids using MAP_FIXED and unmaps allocations which succeed but
aren't in the low 4GB when MAP_32BIT is set.

Bug: 15338094
Bug: 14974497

(cherry picked from commit c355a2a7)

Change-Id: I292a74dbf2ef5ddfb8d0524ae8bc1efbcbd106c8

Bug: 15141726
Change-Id: I6caef98cdd49e85a65c033708180231a948ac352
(cherry picked from commit f2f9daf9)

Bug: 14298175
Change-Id: Idca8bd89a02e9f1fd1bbf51eb7aac13d0057d7b7

Bug: 15142926

(cherry picked from commit a15a81b2)

Change-Id: I3c099a2ba15faeed8d40472566ada197d46a72e5

Implements vmInstructionSet, is64Bit and isCheckJniEnabled methods.

Bug: 14888999
Bug: 14888124

(cherry picked from commit a705376e)

Change-Id: Ic5a90acb2510bf6b39d6f8a60a00b9c3a01c7b13

Bug: 15196336

(cherry picked from commit e0099d4d)

Change-Id: Ieae2e5c9ba4d5a76120236fd1bd7bd1daacc4a59

* commit '84551e76':
  Fix build.

* commit '2dce8b3c':
  Fix build.

* commit '5d8b7b22':
  Fix build.

Old Atomic things were rebased over.

Change-Id: I437041af3247c316f2a75f5ef4bd35286fc8e2b1

* commit '9a699461':
  Begin migration of art::Atomic to std::atomic.

* commit '89629d4a':
  ART: Fix stub test inline assembly for x86

* commit 'bbe4f6e6':
  Fix test-art-target-oat for multi target

* commit '6114b38f':
  ART: Make StubTest IMT sanity check a warning

* commit '3e3ac290':
  Begin migration of art::Atomic to std::atomic.

* commit '31ffae8c':
  ART: Fix stub test inline assembly for x86

* commit 'e86e5b27':
  Fix test-art-target-oat for multi target

* commit 'df104690':
  ART: Make StubTest IMT sanity check a warning

* commit '061ece16':
  Begin migration of art::Atomic to std::atomic.

* commit '94cba829':
  Work around Mac assembler differences.

* commit 'b9dc0359':
  ART: Fix libjavacore dependency

* commit '388c6e27':
  ART: Fix stub test inline assembly for x86

* commit '89bfb2be':
  Fix test-art-target-oat for multi target

Avoids running dalvikvm with 32-bit native library. When the primary target is
64-bit, dalvikvm is a symlink to dalvikvm64 which can't load 32-bit native
library.

Bug: 15131102
Change-Id: I29c2f3b5a62b5f507674f3f6d1b9f3f2e5a9de23

Clang can handle the register pressure, but GCC can't. Make one
a memory constraint.

Change-Id: I49f048b29f5677449bf6ee6282516462332ee645

* commit '67922bb3':
  Work around Mac assembler differences.

* commit '9c471342':
  ART: Make StubTest IMT sanity check a warning

* commit 'cd3479df':
  ART: Fix libjavacore dependency

* commit '512d5393':
  Work around Mac assembler differences.

* commit 'fd06f392':
  ART: Fix libjavacore dependency