escape, as documented in the comment for the check_escape() function

the --help-formats output.  Also moved that list up so it's more obvious
when adding formats.

the one in cmd.py).

consistency.

  - added big comment describing possible problems
  - look for and react to versions of gcc, ld, and dlltool; mainly
    this is done by the 'get_versions()' function and the CygwinCCompiler
    and Mingw32CCompiler constructors
  - move 'check_config_h()' to end of file and defer calling it until
    we need to (ie. in the CygwinCCompiler constructor)
  - lots of changes in 'link_shared_object()' -- mostly seems to be
    library and DLL stuff, but I don't follow it entirely

in '_init_nt()' (they were kludges for CygwinCCompiler and no longer needed).

it so BCPPCompiler actually works, so I'm provisionally accepting it
-- ugly and working is better than not working!  Major changes:
  - normalize paths (apparently BC++ doesn't like slashes)
  - overhauled how we search for and specify libraries on the linker
    command-line
  - hacked up 'find_library_file()' so it knows about "debug" library
    naming convention as well as "bcpp_xxx.lib" -- the question is,
    is this a well-established and sensible convention?
Also:
  - change to use 'util.write_file()' to write the .def file

'export_symbols' can be None (not sure this is a good idea: it's inconsistent
  with every other instance attribute of Extension).

the linker leaves the (temporary) .lib file in the temporary dir.  (Moved
from 'msvc_prelink_hack()' method in build_ext.py.)

  - 'export_symbol_file' (and corresponding 'def_file' in the old
    "build info" dict) are gone; warn if we see 'def_file' in the
    dict
  - the MSVC "pre-link hack" is gone -- all that stuff is now handled
    elsewhere (eg. by using 'export_symbols', etc.)
  - add 'get_export_symbols()' and 'get_libraries()' methods -- needed
    because on Windows, both of those things are a tad more complicated
    than fetching them from the Extension instance

-- added REPEAT_ONE operator
-- added ANY_ALL operator (used to represent "(?s).")

Undo that!

-- fixed literal check in branch operator
   (this broke test_tokenize, as reported by Mark Favas)
-- added REPEAT_ONE operator (still not enabled, though)
-- added some debugging stuff (maxlevel)

-- reverted REPEAT operator to use "repeat context" strategy
   (from 0.8.X), but done right this time.
-- got rid of backtracking stack; use nested SRE_MATCH calls
   instead (should probably put it back again in 0.9.9 ;-)
-- properly reset state in scanner mode
-- don't use aggressive inlining by default

that sys.version_info will be built properly.

Modify HTTP to use delegation instead of inheritance.  The
_connection_class attribute of the class defines what class to
delegate to.  The HTTPS class is a subclass of HTTP that redefines
_connection_class.

   the test again...

Update docstring to reflect change of name for the parsers subpackage.

project.

at this point.