g-w1 638f93ebdc stage2: implementation of @setEvalBranchQuota:
`@setEvalBranchQuota` can be called before the comptime/inline call
stack is created.

For example:

```zig
@setEvalBranchQuota(100);
comptime {
    while (true) {}
}
```

Here we need to set the branch_quota before the comptime block creates a
scope for the branch_count.
2021-01-04 12:42:52 -07:00
..
2021-01-03 23:20:09 +01:00
2020-09-21 21:14:01 -07:00