Make the netdb unit tests work on the host.

Bug: 18111005
Change-Id: I79c6929c3827716e19b44d7469db69740f4b449c
Disable clang compilation due to lack of ifunc.

BUG: 18055309
Change-Id: I0f36011cf7872a20ddd36a6c3c607eb96f0a8ec2
Merge "Make the netdb unit tests work on the host."
Merge "Disable clang compilation due to lack of ifunc."