fixes in disasm, added example of using bxInstruction_c disasm into dbg_main.cc (commented out for now)

git-svn-id: svn://svn.code.sf.net/p/bochs/code/trunk@11852 6c8e4198-a580-4521-a02f-c9ae86df1db9
fixed warning under new MSDEV compiler

git-svn-id: svn://svn.code.sf.net/p/bochs/code/trunk@11853 6c8e4198-a580-4521-a02f-c9ae86df1db9