GHC support for the new "record" package

[Christopher Done]

> The latter {| ... |} might serve as a solid syntax suggestion for the anonymous row type syntax.

I like this well enough. My Hugs TRex suggestion comes from not
particularly caring much what characters are used to delimit some
fields, but that using an existing implementation's design decisions
allows one to avoid going through bikesheddery. #x like in TRex also
WFM too. Personally I could care less whether it matches OO languages
x.y or not.