[PATCH] Add scan-build python implementation

[Laszlo Nagy]

thank you @danielmarjamaki for your comments!

> I can see that you test with travis. Did you consider to test it with appveyor also to get windows testing also?


i don't have access to machine which runs windows, neither have experience to develop on windows. that's one of the reasons i would like this code part of Clang repository, that other people could improve it.

> ear.c:

> 

> - not written in C++, doesn't seem to me it conforms to LLVM/CLANG coding style

> - As far as I know, `__attribute__` is not ANSI C.. and can't be compiled by some compilers.

> - `unistd.h` is a posix header isn't it? can't be used by some compilers.




- about coding style:
  - those few C files in LLVM and Clang repository does not really follow the C++ style guide either. (so could not decide what is the style for C.)
  - by it's function it is better to be written in C. (to keep dependencies minimal.)
  - i think we can rewrite it smartly in C++, but i would require help from others.

- about `__attribute__`: since this code require Clang to be on the machine anyway, maybe it is not a strict requirement to expect that it should be compiled by Clang.

- about `unistd.h`: yes, currently the command interception relies on POSIX methods. (same thing applies here what i said about windows port.)

> typo reach => rich?


fixed in commit 25455. thanks for it!


http://reviews.llvm.org/D9600

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