While running into failures on unmap calls, it becomes difficult to
figure out what's wrong. Break the dieOnMapUnmapError into specific
versions for map, unmap, and then one for mprotect.
Also, put these in a common linux space so that all linux derived code
can reuse this code.
The RSS code is not very useful and can be replicated by using
ulimit. Remove it and remove the options associated with it.
Reviewed By: Chia-hungDuan
Differential Revision: https://reviews.llvm.org/D159155
Said function had a few shortfalls:
- didn't set an abort message on Android
- was logged on several lines
- didn't provide extra information like the size requested if OOM'ing
This improves the function to address those points.
Differential Revision: https://reviews.llvm.org/D103034
