* src/vm/builtin.c (methodindent, callcount): Removed static variables.

* src/vm/builtin.c (methodindent, callcount): Removed static variables.
(builtin_throw_exception): Use trace_exception_builtin.
(builtin_verbosecall_enter): Use thread-specific variables.
(builtin_verbosecall_exit): Likewise.

* src/vm/exceptions.c (exceptions_handle_exception): Fixed methodindent for
java call traces.

* src/vm/jit/trace.c: Added comments and minor cleanups.
(trace_exception_builtin): Implemented (moved from builtin.c).

* src/vm/jit/trace.h (trace_exception_builtin): Added prototype.