Printf format warnings

[Michael D. Adams]

The printf format "%d" should be changed to "%ld" when the argument is a "long int" rather than just an "int". Also the format "%x" expects an "unsigned int" while "%lx" expects an "unsigned long int".

The following places need changes to reflect that. At present they generate warnings under "make CFLAGS='-W -Wall'".

src/ikarus-collect.c line 506: change "%d" to "%ld"
src/ikarus-collect.c line 1147: change "%08x" to "%08lx"
src/ikarus-collect.c line 1190: change "long int i" to "unsigned long int i"
src/ikarus-numerics.c line 51: change "%08x" to "%08lx" and change "(long int)fst" to "fst" since fst is already "unsigned long int".

[Abdulaziz Ghuloum (aghuloum)]

Fixed *all* "-Wall" warnings in revision 1495. Thanks.