complex can now be used as an identifier

Remove final vestiges of 'complex' keyword.

Closes #252

Examples/test-suite/common.mk

@@ -718,6 +718,7 @@ C_TEST_CASES += \
 	nested_extend_c \
 	nested_structs \
 	newobject2 \
+	not_ckeywords \
 	overload_extend_c \
 	overload_extend2 \
 	preproc \

Examples/test-suite/not_c_keywords.i

@@ -0,0 +1,13 @@
+%module not_c_keywords
+
+%extend ComplexStruct {
+void init() {
+  $self->complex = 123;
+}
+}
+
+%inline %{
+struct ComplexStruct {
+  int complex; /* complex as variable name */
+};
+%}

Examples/test-suite/python/not_c_keywords_runme.py

@@ -0,0 +1,7 @@
+from not_c_keywords import *
+
+cs = ComplexStruct()
+cs.init()
+if cs.complex != 123:
+    raise RuntimeError("complex not correct")
+cs.complex = 456