compile warning (4.0 beta)

["John Belmonte" <jvb@...>]

With gcc these warnings are emitted on a 64 bit mips platform because a
pointer is 32 bits, while a long is 64.  Maybe not much that can be done
about this.

-John

----
Cc src/lstring.o
src/lstring.c: In function `luaS_resize':
src/lstring.c:54: warning: cast from pointer to integer of different size
src/lstring.c: In function `luaS_createudata':
src/lstring.c:102: warning: cast from pointer to integer of different size
Cc src/ltable.o
src/ltable.c: In function `luaH_mainposition':
src/ltable.c:52: warning: cast from pointer to integer of different size
src/ltable.c:55: warning: cast from pointer to integer of different size
src/ltable.c:58: warning: cast from pointer to integer of different size