[Bug libfortran/48030] Implement read_x using fbuf_getc

[jvdelisle at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48030

--- Comment #3 from Jerry DeLisle <jvdelisle at gcc dot gnu.org> 2011-03-27 
14:36:38 UTC ---
Left to do is backport to 4.6.1