The ioprio.h header is not a uapi header, so remove it's use and
add the two values that this code needs to use.
Bug: 30072483
Change-Id: I5c8b6f40bd60a43f50ac26792f96d2fa3f6db020
This also fixes the bug where we were always testing against the fake
strlcpy we provide for glibc/Windows rather than the Android one.
This also removes some unnecessary library dependencies.
This also builds all the cutils tests for the host (static and dynamic).
Change-Id: Icd129d5b025c0ca801be5acf31a54ecd88608df9
