* data.c (Fstring_to_number): Skip initial spaces, to make Emacs
lisp parse consistently on different operating systems.
#include <ctype.h> to help with this.
* data.c (Fstring_to_int): Rename this to Fstring_to_number, since
it parses floats as well as integers. Fix docstring.
(syms_of_data): Fix defsubr.
(wrong_type_argument): Change use.
(Fint_to_string): Doc fix.
* lisp.h (Fstring_to_int): Change extern declaration.
* data.c (wrong_type_argument): Pass the correct number of
arguments to Fstring_to_int.
* data.c (arithcompare): Add a default case which aborts, just to
make me happy.