[clang] [analyzer] Modernize, improve and promote chroot checker (PR #117791)

[Balazs Benics via cfe-commits]

================
@@ -80,19 +88,53 @@ bool ChrootChecker::evalCall(const CallEvent &Call, 
CheckerContext &C) const {
 void ChrootChecker::evalChroot(const CallEvent &Call, CheckerContext &C) const 
{
   ProgramStateRef state = C.getState();
   ProgramStateManager &Mgr = state->getStateManager();
+  const TargetInfo &TI = C.getASTContext().getTargetInfo();
+  SValBuilder &SVB = C.getSValBuilder();
+  BasicValueFactory &BVF = SVB.getBasicValueFactory();
+  ConstraintManager &CM = Mgr.getConstraintManager();
 
-  // Once encouter a chroot(), set the enum value ROOT_CHANGED directly in
-  // the GDM.
-  state = Mgr.addGDM(state, ChrootChecker::getTag(), (void*) ROOT_CHANGED);
-  C.addTransition(state);
+  const QualType sIntTy = C.getASTContext().getIntTypeForBitwidth(
+      /*DestWidth=*/TI.getIntWidth(), /*Signed=*/true);
----------------
steakhal wrote:

Wouldn't this be simpler?
```suggestion
  const QualType IntTy = C.getASTContext().IntTy;
```

https://github.com/llvm/llvm-project/pull/117791
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