mozilla-b2g/gonk-misc — pull request #179 by walac (2014-07-15 17:04:23+00:00)
Title: Do not build valgrind when B2G_VALGRIND=0.

The b2g.mk script only checked if B2G_VALGRIND variable was empty, so
even when it was set to 0, valgrind was built.

Now we check both if B2G_VALGRIND is nonempty and nonzero to build
with valgrind support.