gcc on arm64 -Og produces a (false positive) warning that
stackPos might be used uninitialised.

Silence gcc by assigning a value to stackPos.
This value must be overriden if a stack description is found.
The fact that the value is overriden is asserted.



git-svn-id: svn://svn.valgrind.org/valgrind/trunk@14438 a5019735-40e9-0310-863c-91ae7b9d1cf9
Update after more triaging.


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@14439 a5019735-40e9-0310-863c-91ae7b9d1cf9
Improvements for Android:

* All Linux targets: add minimal ioctl support for the ION_IOC family

* Android targets: change proprietary-ioctl support for GPUs from
  being a build-time #define kludge to being controlled by --kernel-variant,
  as it should be.  Update documentation accordingly.



git-svn-id: svn://svn.valgrind.org/valgrind/trunk@14440 a5019735-40e9-0310-863c-91ae7b9d1cf9
Add a redirection for the 'index' function.
Fixes BZ #327943


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@14441 a5019735-40e9-0310-863c-91ae7b9d1cf9
Add std_thread2.supp to the tarball.


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@14442 a5019735-40e9-0310-863c-91ae7b9d1cf9
nightly/bin/nightly: Handle libc.so being in /lib or /lib64.

git-svn-id: svn://svn.valgrind.org/valgrind/trunk@14443 a5019735-40e9-0310-863c-91ae7b9d1cf9
readdwarf3.c: Improve error message on bad DW_FORM_GNU_[ref|strp]_alt usage.

git-svn-id: svn://svn.valgrind.org/valgrind/trunk@14444 a5019735-40e9-0310-863c-91ae7b9d1cf9