* mn10300.c (secondary_reload_class): Handle more cases where we
        need secondary reloads.
        (impossible_plus_operand): Accept anything that involves addition
        of the stack pointer.
        * mn10300.md (reload_insi): Always load the stack pointer into
        the destination (which is always an address register).
        * mn10300.h (STORE_FLAG_VALUE): Remove definition.
        * xm-mn10300.h: Declare malloc, realloc, calloc and free.

From-SVN: r13973