Problem: When 'maxfuncdepth' is set above 200 the nesting is limited to 200. (Brett Stahlman) Solution: Allow for Ex command recursion depending on 'maxfuncdepth'.
Problem: Using freed memory with recursive function call. (Dominique Pelle) Solution: Make a copy of the function name.
Problem: Marks, writefile and nested function tests are old style. Solution: Turn them into new style tests. (Yegappan Lakshmanan)
