https://www.python.org/dev/peps/pep-0515/
https://bugs.python.org/issue26331

Practically accepted as of 2016-03-19:
http://thread.gmane.org/gmane.comp.python.devel/156533/focus=156734

errors from incorrect escape sequences when compiling on Windows.

http://bugs.python.org/issue24619

make sure all identifiers are EncodedString objects

try not to write absolute source file paths into C file position comments and use paths relative to build directory instead

allow useless trailing semicolons in some places where people tend to put them, but warn about them (trac ticket 832)

This commit allows you to pass in variables for the conditional compilation
feature from distutils. This allows you to do fairly complex autoconf-type
checks from setup.py and pass the results in to the compiler.

This is an update to the change in ticket #323 here:
http://trac.cython.org/cython_trac/ticket/323

removed lots of unused imports, delayed some imports that are only needed for Cython specific syntax

--HG--
extra : rebase_source : a2df3675fd1efae1a1122ca9742e99ab1405fba6

we use relative filenames for files in the directory itself or
subdirectories, absolute paths otherwise.

this makes cython compatible with emacs compilation mode.

--HG--
extra : transplant_source : %F8%A1H%A9%1B%B0-%A44d%DE%A4%3E%20%82%B3%EB%F8%97%F8

we use relative filenames for files in the directory itself or
subdirectories, absolute paths otherwise.

this makes cython compatible with emacs compilation mode.

--HG--
extra : transplant_source : %9E%2A%91%5E%84%8Ah%B2_%E5%89%E3-%BA%EE%FBc%08%03o

error reporting: fix resource warning for unclosed file (in Py3.2+), cache source lines when we read them more than once

reduce code size of parser and speed it up a little by statically switching to unicode in more places