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

Review URL: https://codereview.chromium.org/533993002

Cr-Commit-Position: refs/heads/master@{#293041}
1 file changed