Roll gyp r1970:1972

Roll gyp r1970:1972

r1972: Makes matching of build files work when absolute Matching wasn't
     working if paths supplied were absolute.
r1971: Support for custom NM/readelf binaries in your toolchain.

BUG=109173
TEST=none
R=scottmg@chromium.org

Committed: https://crrev.com/6e1f2a87f0d559847e1dd192f0ff318950f2eb94
Cr-Commit-Position: refs/heads/master@{#293041}

[scottmg, 2014-09-02 22:22:17]

lgtm

[sky, 2014-09-02 22:28:57]

The CQ bit was checked by sky@chromium.org

[commit-bot: I haz the power, 2014-09-02 22:30:23]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/sky@chromium.org/533993002/1

[commit-bot: I haz the power, 2014-09-03 01:31:38]

Committed patchset #1 (id:1) as 0ba4bf5582206f4d55618cd1035a81fdf7b91e4f

[commit-bot: I haz the power, 2014-09-10 03:22:34]

Patchset 1 (id:??) landed as
https://crrev.com/6e1f2a87f0d559847e1dd192f0ff318950f2eb94
Cr-Commit-Position: refs/heads/master@{#293041}