exception handling related changes: * changed blockPredecessors to list of Instructions, instead of Blocks * removed explicit predecessor management in BlockBegin, now using predecessors from Graph structure * replaced generated LIR exception entries with exception dispatch chains in IR * added Unwind and ExceptionDispatch instructions * removed ExceptionEntry flag in BlockBegin and all code depending on it * removed exceptionHandler list from Instruction, replaced by exception Edge on Invoke and Throw * replaced list of ExceptionHandlers with single exception edge in debug info misc: * changed GraphvizPrinter layout (smaller ports on large nodes) * removed defunct run config

^build/
^dist/
^java/
^java64/
^work/
\.metadata/
~$
\.swp$
\.class$
\.log$
\.bak$
\.aux$
^doc/.*/dot_temp_
^doc/doxygen/.*$
\.orig$
output\.txt$
output\.cfg$
/nbproject/private/
^graal/hotspot/java$
^scratch/
^src/share/tools/hsdis/build/
^src/share/tools/IdealGraphVisualizer/[a-zA-Z0-9]*/build/
^src/share/tools/IdealGraphVisualizer/build/
^src/share/tools/IdealGraphVisualizer/dist/
^make/solaris/solaris_amd64_compiler1/