Reflect logic change in the nogil tests

nogil_test/nogil_extension.pyx

@@ -49,15 +49,15 @@ ccdef class SomeMemory:
   cdef int a;
   cdef double b;
 
-  ccdef void cinit(self, a, b):
+  cdef void cinit(self, a, b) nogil:
       # self.a = a
       # self.b = b
       pass
 
-  ccdef void cdealloc(self):
+  cdef void cdealloc(self):
       pass
 
-  ccdef void foo1(self):
+  cdef void foo1(self):
     """
     It is possible to define native C/Cython methods
     that release the GIL (cool...)
@@ -82,7 +82,7 @@ ccdef class SomeMemory:
     
     
 # cdef bar(): # it is currently impossible to release GIL
-ccdef double bar1(): # yet this is what we would like to
+cdef double bar1() nogil: # yet this is what we would like to
     """
     This is a pure "cython method" which we would like to
     be able to declare with nogil option but this requires
@@ -94,7 +94,7 @@ ccdef double bar1(): # yet this is what we would like to
     
     return o1.a
 
-ccdef double bar2(): # yet this is what we would like to
+cdef double bar2() nogil: # yet this is what we would like to
     cdef SomeMemory o2 = SomeMemory(2, 2.0)
 
     o2.foo2()