Always #include <sys/...>, not <linux/...>.

Change-Id: Id6e846ff01bebf65828da78ae673233bcaeb3d40
Merge "Always #include <sys/...>, not <linux/...>."
Link to the corresponding libril-reference.so on 64 bit platform

The REFERENCE_RIL_PATH should point to the corresponding path.
Linked to 32 bit library on 64 bit platfrom caused the ril-daemon
crashes, which also blocked the network on emulator image.

Change-Id: I3a928178a2f0fe71b9782cb600b88c6da973826a
Merge "Link to the corresponding libril-reference.so on 64 bit platform"