[Bug #21626]

The following snippet results with a SEGV:

```ruby
C = Class.new do
  alias_method :new_to_s, :to_s
end

TracePoint.new(:c_call, &:parameters).enable { C.new.new_to_s }
```

at MRI 3.3.6 and ruby 3.4.0dev

The root cause of the issue lies in the `rb_tracearg_parameters` function
within the `RUBY_EVENT_C_RETURN` branch. Specifically, when the invoked
method is an alias for a C function,
`rb_method_entry_without_refinements(..., trace_arg->called_id, ...)`
may return NULL. In that case we can fallback to `trace_arg->id`.

- ISO C forbids conversion of function pointer to object pointer type
- ISO C forbids conversion of object pointer to function pointer type

TracePoints with incompatible events (i.e. events not in ISEQ_TRACE_EVENTS)
with a method target will fail an assertion error because it does not
filter for the supported events. For example, the following lines will
cause an assertion error:

    def foo; end
    # No arguments passed into TracePoint.new enables all ISEQ_TRACE_EVENTS
    TracePoint.new {}.enable(target: method(:foo))
    # Raise is not supported with a target
    TracePoint.new(:raise, :return) {}.enable(target: method(:foo))
    foo

Crashes with:

    Assertion Failed: vm_insnhelper.c:7026:vm_trace:(iseq_local_events & ~(0x0001 | 0x0002 | 0x0004 | 0x0008 | 0x0010| 0x0020| 0x0040 | 0x0100 | 0x0200 | 0x4000 | 0x010000| 0x020000)) == 0

This frees FL_USER0 on both T_MODULE and T_CLASS.

Note: prior to this, FL_SINGLETON was never set on T_MODULE,
so checking for `FL_SINGLETON` without first checking that
`FL_TYPE` was `T_CLASS` was valid. That's no longer the case.

[Feature #16495]

[Bug #20194]

When disabling the TracePoint on bmethod, the hooks list is not freed.

For example:

    obj = Object.new
    obj.define_singleton_method(:foo) {}
    bmethod = obj.method(:foo)
    tp = TracePoint.new(:return) {}

    10.times do
      100_000.times do
        tp.enable(target: bmethod) {}
      end

      puts `ps -o rss= -p #{$$}`
    end

Before:

    18208
    22832
    26528
    29728
    34000
    37776
    40864
    44400
    47680
    51504

After:

    16688
    17168
    17168
    17248
    17696
    17760
    17824
    17824
    17856
    17920

to BUILTIN_ATTR_SINGLE_NOARG_LEAF

The attribute was created when the other attribute was called BUILTIN_ATTR_INLINE.
Now that the original attribute is renamed to BUILTIN_ATTR_LEAF, it's
only confusing that we call it "_INLINE".