Added the cProfile module.
Based on lsprof (patch #1212837) by Brett Rosen and Ted Czotter.
With further editing by Michael Hudson and myself.
History in svn repo: http://codespeak.net/svn/user/arigo/hack/misc/lsprof

* Module/_lsprof.c is the internal C module, Lib/cProfile.py a wrapper.
* pstats.py updated to display cProfile's caller/callee timings if available.
* setup.py and NEWS updated.
* documentation updates in the profiler section:
   - explain the differences between the three profilers that we have now
   - profile and cProfile can use a unified documentation, like (c)Pickle
   - mention that hotshot is "for specialized usage" now
   - removed references to the "old profiler" that no longer exists
* test updates:
   - extended test_profile to cover delicate cases like recursion
   - added tests for the caller/callee displays
   - added test_cProfile, performing the same tests for cProfile
* TO-DO:
   - cProfile gives a nicer name to built-in, particularly built-in methods,
     which could be backported to profile.
   - not tested on Windows recently!
diff --git a/Doc/lib/lib.tex b/Doc/lib/lib.tex
index 9e4dcb5..44e7c96 100644
--- a/Doc/lib/lib.tex
+++ b/Doc/lib/lib.tex
@@ -358,7 +358,7 @@
 \input{libpdb}                  % The Python Debugger
 
 \input{libprofile}              % The Python Profiler
-\input{libhotshot}              % New profiler
+\input{libhotshot}              % unmaintained C profiler
 \input{libtimeit}