hiphopvm: handle lack of libunwind/gperftools on aarch64 in better way
hiphopvm: handle lack of libunwind/gperftools on aarch64 in better way

I want to get it built for x86-64 to check is everything sorted out.

Signed-off-by: Marcin Juszkiewicz <c7029741245584e1c88bcae5e15b82dba628e919@linaro.org>

xleng/meta-linaro,linaro-home/meta-linaro,linaro-home/meta-linaro,linaro-home/meta-linaro,xleng/meta-linaro,xleng/meta-linaro,linaro-home/meta-linaro,xleng/meta-linaro,linaro-home/meta-linaro,xleng/meta-linaro,linaro-home/meta-linaro