Replace assert() with project-specific version.

Our convention is to use our own form of assertion (bccAssert,
rsAssert, slangAssert) rather than C standard assertion (assert)
because the latter is disabled for the Android build process.
However, a few instances of assert() somehow made it through.

Bug 21444723

Change-Id: I6702268d452317bf0d78304f112fbfafefe3d5b9
3 files changed