input conversion reading string (or files?) with windows-style line ends ("\r\n")

[slayoo]

As reported by @davidh-ssec on SF.net (https://sourceforge.net/p/gnudatalanguage/bugs/651/):

IDL> data2 = fltarr(1,2)
IDL> s2 = '5 ' + string([13B, 10B]) + '5 ' + string([13B, 10B])
IDL> reads,s2,data2
IDL> print,data2
      5.00000
      5.00000

GDL> data2 = fltarr(1,2)
GDL> s2 = '5 ' + string([13B, 10B]) + '5 ' + string([13B, 10B])
GDL> reads,s2,data2
% Input conversion error.
GDL> print,data2
      5.00000
     -1.00000

[GillesDuvert]

title changed. conversion is OK if lines end with \n only. We should in this case ignore \r (rather, more generally, a predefined set of line ending characters).