8026161: Don't narrow floating-point literals in the lexer
Reviewed-by: hannesw, jlaskey
[object Object]
A big fat string
123
function(x) { return x; }
proto
A big fat string
123
function(x) { return x; }
A A big fat string
B 123
F function(x) { return x; }
G proto
R A big fat string
S 123
T function(x) { return x; }