GH-119866: Spill the stack around escaping calls. (GH-124392)

* Spill the evaluation around escaping calls in the generated interpreter and JIT. 

* The code generator tracks live, cached values so they can be saved to memory when needed.

* Spills the stack pointer around escaping calls, so that the exact stack is visible to the cycle GC.

Tools/cases_generator/lexer.py

@@ -79,7 +79,7 @@ for op in operators:
 opmap = {pattern.replace("\\", "") or "\\": op for op, pattern in operators.items()}
 
 # Macros
-macro = r"# *(ifdef|ifndef|undef|define|error|endif|if|else|include|#)"
+macro = r"#.*\n"
 CMACRO = "CMACRO"
 
 id_re = r"[a-zA-Z_][0-9a-zA-Z_]*"
@@ -333,6 +333,9 @@ def tokenize(src: str, line: int = 1, filename: str = "") -> Iterator[Token]:
                 line += newlines
         else:
             begin = line, start - linestart
+            if kind == CMACRO:
+                linestart = end
+                line += 1
         if kind != "\n":
             yield Token(
                 filename, kind, text, begin, (line, start - linestart + len(text))