Update gyp LINK_COMMANDS_AIX to support both 32-bit and 64-bit files. * cmd_alink: Add -X32_64 option. * cmd_alink_thin: Add -X32_64 option.
Update gyp LINK_COMMANDS_AIX to support both 32-bit and 64-bit files.
* cmd_alink: Add -X32_64 option.
* cmd_alink_thin: Add -X32_64 option.

BUG=
R=thakis@chromium.org

Review URL: https://codereview.chromium.org/1319663007 .

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