[issue1542] bad crypto performance (using openssl)

[Michael Neumann]

Strange, for x86_64 aes-128 (and others) are much slower for small sizes
with asm than without.

with asm:

aes-128 cbc      99800.49k   106699.15k   108852.40k   277620.74k
281411.58k

w/o asm:

aes-128 cbc     146135.83k   155790.60k   158851.09k   159470.71k
159413.51k

Regards,

  Michael