Fix unistd.getpid_caching_and_clone.

This test only works if you're root (strictly: if you have permission to
CLONE_NEWNS), so it's useful to us when we're doing ad hoc testing (since
that's usually done as root), but it's not useful as part of CTS or when
running the tests on the host.

(cherry-pick of 84d0683a824fa02dbaa6d1b56a79223804b54e80.)

Bug: 16705621
Bug: 17170200
Change-Id: Ia92c871b15f7e45fc174bb59bc95540fd00ae745
Merge "Fix unistd.getpid_caching_and_clone."
Implement malloc_info(3).

Expose jemalloc stats through the malloc_info(3) interface.

Bug: 16874689
Change-Id: I4358ac283002e60ff161107028d1a3fb1e9afb0a
Merge "Implement malloc_info(3)."
Fix dlmalloc build.

Change-Id: Ied542c40867ab443cdd2076bd2e535b00c4854e4
Merge "Fix dlmalloc build."
Bump soinfo version

 This includes:
 1. Placing has_ifunc after fields with version = 0
 2. Switch to has_min_version(v) function.
 3. Minor soinfo initialization refactoring (placement new + ctor)

Change-Id: I1bf5fde4d930914012ce5f3ad5acb48217da9b2d
Merge "Bump soinfo version"
Fix, generalize stdatomic.h; improve test.

We seem to use this stdatomic.h sometimes, and slightly different prebuilts
at other times, making them all difficult to test, and making it unclear
which one we're testing.  This generalizes the bionic header so that it
can be used directly as the prebuilt header as well.  So long as they
don't diverge again, that should somewhat improve test coverage.

Use the correct builtin for atomic_is_lock_free.

Fix atomic_flag_init.

Turn on atomic tests even with __GLIBC__, since they now appear to pass.

Include uchar.h in stdatomic.h where needed.

Add a basic memory ordering test.

Fix bit-rotted comments in bionic tests makefile.

Change-Id: If6a14c1075b379395ba5d93357d56025c0ffab68
Merge "Fix, generalize stdatomic.h; improve test."