Revert "Revert "Port ICU based regex implementation over to OpenJdk.""

This reverts commit fadaa97dd78736d94460684d87dcdadd14a5813c.

Fixes build breakage due to unresolved @link tags.

Change-Id: I329c28d872a2a40064b7219d3537eaae1cfe6fae
4 files changed