tests: Split large tests into smaller files, to run with a small heap.

All tests in basics/ directory can now run and pass using 64-bit unix
port with only a 16k heap (./run-tests --heapsize 16k).  Tests in this
directory should remain small so they can be used for ports with a
small heap.

tests/basics/exceptpoly.py

@@ -97,104 +97,3 @@ try:
     raise LookupError
 except LookupError:
     print("Caught LookupError")
-
-try:
-    raise MemoryError
-except Exception:
-    print("Caught MemoryError via Exception")
-
-try:
-    raise MemoryError
-except MemoryError:
-    print("Caught MemoryError")
-
-try:
-    raise NameError
-except Exception:
-    print("Caught NameError via Exception")
-
-try:
-    raise NameError
-except NameError:
-    print("Caught NameError")
-
-try:
-    raise NotImplementedError
-except RuntimeError:
-    print("Caught NotImplementedError via RuntimeError")
-
-try:
-    raise NotImplementedError
-except NotImplementedError:
-    print("Caught NotImplementedError")
-
-try:
-    raise OSError
-except Exception:
-    print("Caught OSError via Exception")
-
-try:
-    raise OSError
-except OSError:
-    print("Caught OSError")
-
-try:
-    raise OverflowError
-except ArithmeticError:
-    print("Caught OverflowError via ArithmeticError")
-
-try:
-    raise OverflowError
-except OverflowError:
-    print("Caught OverflowError")
-
-try:
-    raise RuntimeError
-except Exception:
-    print("Caught RuntimeError via Exception")
-
-try:
-    raise RuntimeError
-except RuntimeError:
-    print("Caught RuntimeError")
-
-try:
-    raise SyntaxError
-except Exception:
-    print("Caught SyntaxError via Exception")
-
-try:
-    raise SyntaxError
-except SyntaxError:
-    print("Caught SyntaxError")
-
-try:
-    raise TypeError
-except Exception:
-    print("Caught TypeError via Exception")
-
-try:
-    raise TypeError
-except TypeError:
-    print("Caught TypeError")
-
-try:
-    raise ValueError
-except Exception:
-    print("Caught ValueError via Exception")
-
-try:
-    raise ValueError
-except ValueError:
-    print("Caught ValueError")
-
-try:
-    raise ZeroDivisionError
-except ArithmeticError:
-    print("Caught ZeroDivisionError via ArithmeticError")
-
-try:
-    raise ZeroDivisionError
-except ZeroDivisionError:
-    print("Caught ZeroDivisionError")
-