Update FOLLOW set for ty tokens

[alexcrichton]

Accounts for rust-lang/rust#27000

cc @cmr

[emberian]

r+

[nikomatsakis]

cc @pnkfelix

[nikomatsakis]

Hard to argue against this!

[nikomatsakis]

To be clear, did code for this already land?

[alexcrichton]

@nikomatsakis yeah it landed in rust-lang/rust#27000 (although we can revert if we don't want to accept this RFC)

[dgrunwald]

Any reason we don't allow { after ty?
In particular, I'd like to write a macro that mimics function definition syntax:
($paramname:ident) -> $rettype:ty $body:block

[nikomatsakis]

@dgrunwald yes, seems like there isn't a good one. also where keyword.

[huonw]

cc #733

[nikomatsakis]

Hear ye, hear ye. This RFC is entering final comment period.

/me thought it already was