REPL: use '> ' for user-input prompt (instead of '>> ')
REPL: use '> ' for user-input prompt (instead of '>> ')

Funny thing: copying the text from the REPL is now a valid Sidef program, where '>' is an alias for the 'say' keyword.

Example:

	> log(2)
	#1 = 0.69314718055994530941723212145817656807550013436
	> factor(5040)
	#2 = [2, 2, 2, 2, 3, 3, 5, 7]

trizen/sidef,trizen/sidef,trizen/sidef,trizen/sidef