Update for libcutils socket_loopback_server removal.

TcpStream seems to be expecting IPv4 only, since connect has a default
address of 127.0.0.1, so add a socket_loopback_server implementation
that only listens on IPv4.

Bug: http://b/37282612
Test: treehugger
Change-Id: I17deae4b4ac9ced36955433dca837b36cd80b11e
1 file changed
tree: 3f60679087ecba2cbb99fa3530e591111439976f
  1. host/
  2. shared/
  3. system/
  4. tests/
  5. Android.mk
  6. common.mk
  7. README