Request for review (XS): 6829021 tests for 6636138 use UseSuperword instead of UseSuperWord

[Changpeng Fang]

http://cr.openjdk.java.net/~cfang/6829021/webrev.00/

Problem:
 A typo of the the VM flag -XX:+UseSuperword in the test cases caused 
nightly failure (Unrecognized VM option '+UseSuperword').
 
Solution:
The correct VM flag should be -XX:+UseSuperWord. Howerer, since the 
default of UseSuperWord is ON, I simply
remove this flag for the regression tests.
 

Thanks,

Changpeng