Non-constant expressions as function names

Eventually, something like this should be supported:
```c
int foo(void) { return 0; }
int bar(void) { return 1; }

int res = (true ? foo : bar)();
```

Look for the number `229` in the code to find clues to implement this feature.

Search the codebase for references to issue number 229 and trace how function-call expressions and function names are represented. Use the example in the issue as the behavioral target; done means the conditional expression can select either function and the resulting call compiles and executes correctly.

Written by the indexing model from the issue text.