Change type initialization entrypoints to kSaveEverything.

Also avoid the unnecessary read barriers for boot image
classes with kBssEntry or kJitTableAddress (the kBssEntry
and JIT work missed the `read_barrier_option` flag), fix
bit-rotten non-Baker read barriers on ARM and ARM64 and
fix bit-rotten ARM64 relative patcher's IsAdrpPatch() used
for erratum 843419 workaround.

aosp_angler-userdebug with CC:
  before:
    arm boot*.oat: 35440420
    arm64 boot*.oat: 43504952
  after:
    arm boot*.oat: 35222292 (-218128, -0.62%)
    arm64 boot*.oat: 43389048 (-115904, -0.26%)

aosp_angler-userdebug without CC:
  before:
    arm boot*.oat: 31927412
    arm64 boot*.oat: 39340512
  after:
    arm boot*.oat: 31708736 (-218676, -0.68%)
    arm64 boot*.oat: 39211768 (-128744, -0.33%)

Test: m test-art-host (non-CC, Baker CC, table lookup CC)
Test: m test-art-target on Nexus 6P (non-CC, Baker CC, table lookup CC)
Test: Nexus 6P boots (non-CC, Baker CC, table lookup CC)
Bug: 30627598
Change-Id: Ida5bbce414844de9e4273e40334165d4494230d4