Merging the gen-branch into the main line, at Guido's direction. Yay!

Bugfix candidate in inspect.py:  it was referencing "self" outside of
a method.

Include/compile.h

@@ -33,6 +33,7 @@ typedef struct {
 #define CO_VARARGS	0x0004
 #define CO_VARKEYWORDS	0x0008
 #define CO_NESTED       0x0010
+#define CO_GENERATOR    0x0020
 
 extern DL_IMPORT(PyTypeObject) PyCode_Type;
 

Include/frameobject.h

@@ -21,6 +21,8 @@ typedef struct _frame {
     PyObject *f_globals;	/* global symbol table (PyDictObject) */
     PyObject *f_locals;		/* local symbol table (PyDictObject) */
     PyObject **f_valuestack;	/* points after the last local */
+    PyObject **f_stackbottom;   /* points to the last item on the stack if
+                                  frame has yielded. */
     PyObject *f_trace;		/* Trace function */
     PyObject *f_exc_type, *f_exc_value, *f_exc_traceback;
     PyThreadState *f_tstate;

Include/graminit.h

@@ -18,47 +18,48 @@
 #define break_stmt 273
 #define continue_stmt 274
 #define return_stmt 275
-#define raise_stmt 276
-#define import_stmt 277
-#define import_as_name 278
-#define dotted_as_name 279
-#define dotted_name 280
-#define global_stmt 281
-#define exec_stmt 282
-#define assert_stmt 283
-#define compound_stmt 284
-#define if_stmt 285
-#define while_stmt 286
-#define for_stmt 287
-#define try_stmt 288
-#define except_clause 289
-#define suite 290
-#define test 291
-#define and_test 292
-#define not_test 293
-#define comparison 294
-#define comp_op 295
-#define expr 296
-#define xor_expr 297
-#define and_expr 298
-#define shift_expr 299
-#define arith_expr 300
-#define term 301
-#define factor 302
-#define power 303
-#define atom 304
-#define listmaker 305
-#define lambdef 306
-#define trailer 307
-#define subscriptlist 308
-#define subscript 309
-#define sliceop 310
-#define exprlist 311
-#define testlist 312
-#define dictmaker 313
-#define classdef 314
-#define arglist 315
-#define argument 316
-#define list_iter 317
-#define list_for 318
-#define list_if 319
+#define yield_stmt 276
+#define raise_stmt 277
+#define import_stmt 278
+#define import_as_name 279
+#define dotted_as_name 280
+#define dotted_name 281
+#define global_stmt 282
+#define exec_stmt 283
+#define assert_stmt 284
+#define compound_stmt 285
+#define if_stmt 286
+#define while_stmt 287
+#define for_stmt 288
+#define try_stmt 289
+#define except_clause 290
+#define suite 291
+#define test 292
+#define and_test 293
+#define not_test 294
+#define comparison 295
+#define comp_op 296
+#define expr 297
+#define xor_expr 298
+#define and_expr 299
+#define shift_expr 300
+#define arith_expr 301
+#define term 302
+#define factor 303
+#define power 304
+#define atom 305
+#define listmaker 306
+#define lambdef 307
+#define trailer 308
+#define subscriptlist 309
+#define subscript 310
+#define sliceop 311
+#define exprlist 312
+#define testlist 313
+#define dictmaker 314
+#define classdef 315
+#define arglist 316
+#define argument 317
+#define list_iter 318
+#define list_for 319
+#define list_if 320

Include/opcode.h

@@ -71,6 +71,7 @@ extern "C" {
 #define RETURN_VALUE	83
 #define IMPORT_STAR	84
 #define EXEC_STMT	85
+#define YIELD_VALUE	86
 
 #define POP_BLOCK	87
 #define END_FINALLY	88

Include/symtable.h

@@ -46,6 +46,7 @@ typedef struct _symtable_entry {
 	int ste_nested;          /* true if scope is nested */
 	int ste_child_free;      /* true if a child scope has free variables,
 				    including free refs to globals */
+	int ste_generator;       /* true if namespace is a generator */
 	int ste_opt_lineno;      /* lineno of last exec or import * */
 	struct symtable *ste_table;
 } PySymtableEntryObject;