8026161: Don't narrow floating-point literals in the lexer
Reviewed-by: hannesw, jlaskey
5,,1,,2,,3,
,1, 1,,2,,3,
,1,,42,,3,
4,1,2,3,,,,,,,,,
1,2 2,3,,
1.1,2.2,3.3
1.1,2.2,3.3,4.4
2,two,3.14,pi,14,fourteen
10,9,8,7,6,5,4,3,2,1,,
,,,,,,,,42
21,1,2,3 4
1,2,3,4,5,,7,8,9
23,37,42,86,47
7,23,37,42
11,12,13
1,7,3.14