bionic: Add workarounds for current compilers

With current compilers, we're getting "this function cannot be inlined"
errors on vsnprintf and strlcpy because the always_inline attribute is
set.

Before marking this a "fix" instead of a "workaround", we should figure
out why the functions can't be inlined.

PatchSet 2: Set the topic to linaro.
This is needed to build with AOSP's GCC 4.7.

Change-Id: Id6c5464defafb3f9044c102d32a57e70d760b05d
Signed-off-by: Bernhard Rosenkraenzer <Bernhard.Rosenkranzer@linaro.org>
Merge "bionic: Add workarounds for current compilers" into jb-mr1