Adjust addends rather than targets for RELA configurations.

Adjust addends rather than targets for RELA configurations.

Relocations with addend use the addend rather that the location pointed
to by the relocation as the target of the relocations.  For RELA
relocations, ignore the target and instead adjust the addend for the
hole being created in the file.  Change unit test data accordingly.

Ensure that sections we resize are never zero-length when we load the
Elf file, and that we never set either to zero-length on packing.

BUG=385553
Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=287354

[rmcilroy, 2014-08-04 12:12:50]

lgtm

https://codereview.chromium.org/423393010/diff/1/tools/relocation_packer/src/...
File tools/relocation_packer/src/elf_file.cc (right):

https://codereview.chromium.org/423393010/diff/1/tools/relocation_packer/src/...
tools/relocation_packer/src/elf_file.cc:695: void AdjustRelocation(ssize_t
index,
AdjustRelocationTarget?

[simonb (inactive), 2014-08-04 13:28:19]

The CQ bit was checked by simonb@chromium.org

[commit-bot: I haz the power, 2014-08-04 13:29:51]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/simonb@chromium.org/423393010/1

[commit-bot: I haz the power, 2014-08-04 17:10:31]

Change committed as 287354