Apply coding style
Add cpplint.py, a modified checker for Google's C++ coding style
Add target "style" to run cpplint.py

- try "ninja style"
Add StyleCheck.cmake
Add "style_check" test
Exclude 'style_check' from MemCheck list
Use time(0) as an initial seed for rand_r() in pvector/pdeque tests
Update style.md
Remove debug code from cpplint.py
Add <ctime> header for time() in pdeque/pvector tests
checkpoint

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>