Request for reviews (S): 7110832: ctw/.../org_apache_avalon_composition_util_StringHelper crashes the VM

[Vladimir Kozlov]

http://cr.openjdk.java.net/~kvn/7110832/webrev

7110832: ctw/.../org_apache_avalon_composition_util_StringHelper crashes the VM

Distance is too large for one short branch in string_indexofC8(). Note, it does 
not fail always because different REX prefixes are generated for different input 
registers.

I added verification code in debug VM by reducing allowed distance (by 32 bytes) 
for short branches. It can be used in a large hand written assembler code.

Tested with full CTW.

Thanks,
Vladimir