This is not my ideal way of going about things.  I'd prefer not
to have expressions typed as fn*(), for example, but I couldn't
get that to work together with inferring the modes of arguments
and other corner cases.

And adjust highlighting/testing scripts to deal with this.

The segv fault issue is #1566

Issue #1543

This patch starts from move the analysis which checkes of probably
incorrectly usage of `int|uint` in native fn.

Issue #1543

Issue #1561

(Commit also includes lots of changes to remove '.'s that a git
merge messed up, or else it was monkeys.)

Does what it says on the tin.

The next commit will remove support for this syntax.

It is reserved for indicating the crate, but doesn't exist in the AST

[cargo] remove bogus function redefinition

[cargo] refactor test_one_crate