(Contributed by Facundo Batista.)

Code simplification by eliminating the unnecessary and error-prone
convolutions for the previously weird sign convention in _WorkRep().
Makes the code more understandable, more reliable, and a bit faster.

The underlying bug still exists, but also existed in 2.3.4:
import.c's load_source_module() returns NULL if
PyOS_GetLastModificationTime() returns -1, but
PyOS_GetLastModificationTime() doesn't set any exception when it returns
-1, and neither does load_source_module() when it gets back -1.  This
leads to "SystemError: NULL result without error in PyObject_Call"
on an import that fails in this way.

    Python software
to
    this software ("Python")

- Added a chunk of plist data as generated by Cocoa's NSDictionary and
  verify we output the same (including formatting)
- Changed the "literal" plist code to match the raw test data

version of base64.encodestring() so I could control the line length of the
base64 output.

(Submitted by James William Pye, Patch revised by Jiwon Seo)

And add an optional argument 'filename' to linecache.checkcache()
to enable checking caches per-file.

Peepholer could be fooled into misidentifying a tuple_of_constants.
Added code to count consecutive occurrences of LOAD_CONST.
Use the count to weed out the misidentified cases.
Added a unittest.

  a) the functionality depended on PyXML before and b) hardly worked to
  begin with.
- Instead, output and require upon input datetime.datetime objects.

  writePlistToString()
- use these two in the resource functions.
- Tweaked module doc string.

_PyString_Resize() readied strings for mutation but did not invalidate
the cached hash value.

the dict(**kwargs) feature.

- fix a minor formatting nit that affected the typeset version

[ 1052399 ] plistlib: add plst resource functionality, fix bugs

the indentation of a comment block to be ignored when reformatting the
block, leading to overly long reformatted lines (too wide by an amount
equal to the indentation width).  Looks like a typo in the original
patch, a 1-character repair.

Applies patch #1051866.  Thanks Felix Wiemann.

know that the newly-started Python process only has 3 filedescriptors
open. Fixes bug 1048808.