Proth_sieve
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Legend:
+	added
*	changed

v0.42
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*	Better speed for low #k (SOB and PSP).

v0.41
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+	-full switch writes full n values to .dat instead of incremental +ninc.
*	5-10% speedup.
*	Lowered memory usage.
*	More tolerant hash settings to prevent infinite loop for some p.

v0.40
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+	FreeBSD versions available.
+	-w switch causes proth_sieve not to exit if no nextrange.txt exists, 
	but rather to wait 5 mins and then check again until a new range is 
	found.

v0.39
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+	Support for k*2^n-1 numbers. Use -riesel switch.
*	Can handle arbitrary # k up to 104 now.
*	Lowered memory usage.