Don't fold constants in the parser.
Don't fold constants in the parser.

This makes it harder for the translator to convert between syntax trees
and AST nodes.  If we want to perform this folding we should do it at a
higher level.

tarruda/typescript,mbrowne/typescript-dci,popravich/typescript,guidobouman/typescript,mbebenita/shumway.ts,popravich/typescript,rbirkby/typescript,hippich/typescript,fdecampredon/jsx-typescript-old-version,guidobouman/typescript,tarruda/typescript,popravich/typescript,tarruda/typescript,mbrowne/typescript-dci,rbirkby/typescript,hippich/typescript,vcsjones/typescript,mbrowne/typescript-dci,rbirkby/typescript,fdecampredon/jsx-typescript-old-version,hippich/typescript,fdecampredon/jsx-typescript-old-version,mbrowne/typescript-dci,guidobouman/typescript,mbebenita/shumway.ts,mbebenita/shumway.ts