Extend relocation packing to non-ARM architectures.

Extend relocation packing to non-ARM architectures.

Apply relocation packing to ia32 and mips32 builds.

Deferred for x64 pending migration of an ndk bug fix into the
chromium tree.  See b/20532404.

BUG=385553
Committed: https://crrev.com/00ad6ff02565ee933f61b08c7f38723a307d7902
Cr-Commit-Position: refs/heads/master@{#335921}

[simonb (inactive), 2015-06-10 14:36:50]

simonb@chromium.org changed reviewers:
+ cjhopman@chromium.org, rmcilroy@chromium.org

[simonb (inactive), 2015-06-10 14:36:50]

[ +cjhopmap@ for build OWNERS review. ]

[rmcilroy, 2015-06-10 14:50:52]

lgtm, thanks!

Any ETA on the NDK roll which will include the fix for b/20532404 ?

[simonb (inactive), 2015-06-10 15:23:12]

On 2015/06/10 14:50:52, rmcilroy wrote:
> lgtm, thanks!
> 
> Any ETA on the NDK roll which will include the fix for b/20532404 ?

The fix apparently missed the r10e NDK release, and that's the latest.  So we
need to wait another NDK release cycle (r10f?) before an NDK roll will fix this
for us.

FYI, symptom is -- where the NDK bug is present the relocation packer fails when
saving back the packed ELF file:
  ERROR: elf_update failed: invalid data
  FATAL:
../../third_party/android_platform/bionic/tools/relocation_packer/src/elf_file.cc:954:
Flush: CHECK 'file_bytes > 0' failed
Analysis in b/21458405.

[simonb (inactive), 2015-06-16 18:18:17]

simonb@chromium.org changed reviewers:
+ thakis@chromium.org
- cjhopman@chromium.org

[simonb (inactive), 2015-06-16 18:18:18]

-cjhopman +thakis for build/OWNERS review

[Nico, 2015-06-16 18:23:32]

lgtm

[simonb (inactive), 2015-06-24 13:42:14]

The CQ bit was checked by simonb@chromium.org

[simonb (inactive), 2015-06-24 13:42:14]

The patchset sent to the CQ was uploaded after l-g-t-m from thakis@chromium.org,
rmcilroy@chromium.org
Link to the patchset: https://codereview.chromium.org/1178573002/#ps20001
(title: "Rebase to master.")

[commit-bot: I haz the power, 2015-06-24 13:43:03]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1178573002/20001

[commit-bot: I haz the power, 2015-06-24 14:46:19]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2015-06-24 14:47:08]

Patchset 2 (id:??) landed as
https://crrev.com/00ad6ff02565ee933f61b08c7f38723a307d7902
Cr-Commit-Position: refs/heads/master@{#335921}