The test to determine JAVA_OPTIONS was already cheesy (e.g., it does not catch
java-1.7.0-openjdk-1.7.0.9-2.3.8.0.fc18.x86_64, as there "java -version" outputs
"OpenJDK 64-Bit Server VM (build 23.7-b01, mixed mode)" with "64-Bit" in the
second instead of the third field), so make it a bit more cheesy still (i.e.,
just cover the case to not set -d32 for x86_64).

Change-Id: Ib10a16fb3f8104875bfda7de0e8bce59b9c3b06a