fixed profiler compilation in older python

plugins/python/profiler.c

@@ -2,7 +2,7 @@
 
 extern struct uwsgi_server uwsgi;
 
-#ifndef PyFrame_GetLineNumber
+#ifdef HAS_NOT_PyFrame_GetLineNumber
 int PyFrame_GetLineNumber(PyFrameObject *frame) {
 	if (frame->f_trace) {
 		return frame->f_lineno;

plugins/python/uwsgi_python.h

@@ -18,6 +18,10 @@
 #define Py_ssize_t ssize_t
 #endif
 
+#if PY_MAJOR_VERSION == 2 && PY_MINOR_VERSION < 7
+#define HAS_NOT_PyFrame_GetLineNumber 
+#endif
+
 #if PY_MAJOR_VERSION > 2
 #define PYTHREE
 #endif