Code block function syntax, anonymous functions decorator

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def run3( block ):
   for _ in range( 3 ):
      block()

run3():
   normal_suite()

Introduces new syntax; arbitrary functions can follow 'colon'.

Maintains readability, meaning is consistent.

Equivalent to:

def run3( block ):
   for _ in range( 3 ):
      block()

@run3
def anonfunc():
   normal_suite()

Simplification in cases in which decorators are use often.