Name::identifier() returns the identifier used to declare the name.

Still too unstable after all.

This reverts commit 6f3c9f70.

This reverts commit 84ba24ac.

It might work now cause of the fix done in commit
f3767148.

Task: 249227

Crashes, Roberto will fix properly later.

There is no need to "expand" again the scope we get from invoking `resolve'.
(cherry picked from commit c72c84d8)

There is no need to "expand" again the scope we get from invoking `resolve'.

There is no need to "expand" again the scope we get from invoking `resolve'.

Return early in this case.

Reviewed-by: Roberto Raggi

This should simplify the merging of the improved lookup context.

This change removes a number of wrong usages of the CppModelManager::documents()/document().