Copy Bootstrap Methods cause crash

[Asbestosstar]

The way the copyBootstrapMethods method works is it uses the default classpool to look for CtClass files but this does not work if it is on a different classpool or not in a classpool at all. I commonly use JA for the Bytecode level API only which causes issues when I use .compact without a classpool causing great issue with my tools which worked fine with older versions of javassist. Compile time and Bytecode should not really be mixed all that much, at least provide an option to turn off the copy bootstrap in classfile.compact