--HG--
extra : transplant_source : %15%07%06%F7Tq%91%C6%A4%FA%11%DC%27%E9%0D%D7%FA%A1gx

--HG--
extra : transplant_source : 5%FC%EB%8D%0D%CC%F1%7C%CC%909%A9%0C%1C%C2%94Nx%E0m

coverage: try harder to find the main C source file when the tracer first hits an include file in it

make import of Cython.Coverage module fail if coverage.py isn't compatible (better raise ImportError than false hope)

--HG--
extra : transplant_source : jsU4%A9%5E%24%81S%10%94%BF%FC%BD%E9-%CA%96%BF%E2