In Pythonrun, tirn off SIGPIPE and move signal handlers elsewhere.
In ceval.c, also move locals_2_fast/ fast_2_locals to frameobject.c,
replaced local variable trace by f->f_trace, got rid of unused
mergelocals() and unneeded calls to fast_2_locals, return the variable
name on "fast variable not found", AND use "__call__" method if it
exists to call an inmstance. Whew!
compile.c: lists and dictionary in code objects become tuples
import.c: bump MAGIC
thread*.[ch]: added thread_ident() function
version.c: added '++' to version number and bumped date
* traceback.c (tb_print): use sys.tracebacklimit as a maximum number of
traceback entries to print (default 1000).
* ceval.c (printtraceback): Don't print stack trace header -- this is now
done by tb_print().
* funcobject.c (func_repr): don't call getstringvalue(None) for anonymous
functions.
* bltinmodule.c: removed lambda (which is now a built-in function);
removed implied lambda for string arg to filter/map/reduce.
* Grammar, graminit.[ch], compile.[ch]: replaced lambda as built-in
function by lambda as grammar entity: instead of "lambda('x: x+1')" you
write "lambda x: x+1".
* Xtmodule.c (checkargdict): return 0, not NULL, for error.
