Clean up Hyphenator file reading
Clean up Hyphenator file reading

The old code made invalid assumptions about read() behavior and
failed to clean up properly in case of error. This patch changes the
file reading to use IoUtils.readFileAsString, which handles that.

Bug: 21020457
Change-Id: If9b54955c20a20a4ed5e8381d0c7e9c920d0639a

xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base