[Piglit] [PATCH 0/6] Recursion tests v2 and fix OOM tests

[Ian Romanick]

This patch series does a couple things.  First, it adds the ability to
limit the amount of memory that a test can use.  There are several
test cases (including ones added in this series) that can exhaust
system memory on failing implementations.  Setting the rlimit prevents
this unfriendly behavior.  The rlimit can be set either via the
command line (-rlimit option) or in the .shader_test file (rlimit in
the requirements section).

The second thing it does is resubmit my GLSL recursion tests with an
rlimit set in all.tests.

Finally, it sets an rlimit for the glsl-*-explosion tests and removes
them from the blacklist.