Fix some typos in comments

Python/ceval.c

@@ -1470,7 +1470,7 @@ eval_frame_handle_pending(PyThreadState *tstate)
 #define TRACE_FUNCTION_UNWIND()  \
     if (cframe.use_tracing) { \
         /* Since we are already unwinding, \
-         * we dont't care if this raises */ \
+         * we don't care if this raises */ \
         trace_function_exit(tstate, frame, NULL); \
     }
 

configure.ac

@@ -1247,7 +1247,7 @@ AC_MSG_RESULT($EXPORTSYMS)
 # make sure we default having it set to "no": this is used by
 # distutils.unixccompiler to know if it should add --enable-new-dtags
 # to linker command lines, and failing to detect GNU ld simply results
-# in the same bahaviour as before.
+# in the same behaviour as before.
 AC_SUBST(GNULD)
 AC_MSG_CHECKING(for GNU ld)
 ac_prog=ld

setup.py

@@ -343,7 +343,7 @@ def update_extension_flags(self, ext):
 
         Distutils appends extra args to the compiler arguments. Some flags like
         -I must appear earlier, otherwise the pre-processor picks up files
-        from system inclue directories.
+        from system include directories.
         """
         upper_name = ext.name.upper()
         # Parse compiler flags (-I, -D, -U, extra args)