fix the case where exceptions are lowered and we already had getHigh/preInvoke/postInvoke defined in the module
avoid infinite loops in AllocaManager::computeInterBlockLiveness
resolve constants fully, through both multiple aliases and bitcasts
add aliases test
update float ffi rules
1.13.1
mention the function in the asm() error
tiny indentation fix
update relooper; 1.13.2
prettyWarning utility
warn if given the wrong triple
update relooper
Add triple and datalayout strings to testcases.

This allows them to be run without specifying any command-line options,
which is convenient.
Handle conflicting lifetime markers conservatively.

Avoid infinite looping in AllocaManager::computeInterBlockLiveness,
without using new temporary variables. This also makes it clear that
the algorithm is conservative in the face of conflicting liveness
intrinsics.