PPC: Always update raw pointers when handling interrupts inside RegExp code.
PPC: Always update raw pointers when handling interrupts inside RegExp code.

Fix c67cb287a901ddf03d4ae4dafcf431d09fd3e22c

Cannot access kStartIndex and kDirectCall parameters as ints on 64-bit BE platforms.

R=yangguo@chromium.org, mbrandy@us.ibm.com
BUG=

Review URL: https://codereview.chromium.org/1074203003

Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#27764}

UniversalFuture/moosh,UniversalFuture/moosh,UniversalFuture/moosh,UniversalFuture/moosh