RFR: 6830717: replay of compilations would help with debugging

[yumin.qi at oracle.com]

  Hi,

   Please give your comments of the changes about
   6830717: replay of compilations would help with debugging.
http://monaco.sfbay.sun.com/detail.jsf?cr=6830717

   Sometime jvm crashes in the process of compilation or in compiled 
method. To reproduce the compilation process in debug JVM is helpful for 
quickly identifying root cause.
   To do recompilation, we collect data by using of SA (Serviceability 
Agent) to extract application and system class data from core file. 
Those information includes nmethod, methodOop, methodDataOop, 
instanceKlass and corresponding ci counterparts.
   With reconfiguring similar (not exactly same) compiling environment 
as in the core file, try to compile again the failed java methods.

   contributed by Tom R (never).   webrev:

http://cr.openjdk.java.net/~minqi/6830717/ 
<http://cr.openjdk.java.net/%7Eminqi/6830717/>

Thanks
Yumin