Make scripts more future-proof by importing most __future__ stuff. Differential Revision: https://reviews.llvm.org/D55208 llvm-svn: 349504
Using from __future__ import print_function it is possible to have a compatible behavior of `print(...)` across Python version. Differential Revision: https://reviews.llvm.org/D55213 llvm-svn: 349454
Also, add a test for generator a C file with a very deep call stack. llvm-svn: 90468
Serge Guelton