Include directives are groups by library, the groups should be sorted
from the most general (i.e., the STL) to the most specific (the local
includes).
This commit ensures that Boost includes are before LLVM includes.
This is a very large commit importing the reviewed (and heavily
simplified) stack analysis and the new ABI analysis, which provides
information on the calling convention of each function and so on.
For an overview of the new analyses please consult OVERVIEW.md.
The stack analysis is the foundation to obtain accurate information
about the body of a function, which registers are callee-saved,
arguments, return values and so on.
It is implemented as a pass to run in revamb-dump.
This commit also introduces analysis tests specific to what we aim to
obtain from the analysis and also some basic unit tests for data
structures related to the stack analysis.
Alessandro Di Federico