lib2funcs.asm (__outline_prologue): New "function".

        * lib2funcs.asm (__outline_prologue): New "function".
        (__outline_epilogue): New "function".
        * pa.h (TARGET_SPACE): Define.
        (target_flags): Add -mspace and -mno-space.  Enable/disable
        space saving optimizations.
        (FRAME_POINTER_REQUIRED): Frame pointers are always required
        when generating out of line prologues and epilogues.
        * pa.c (compute_frame_size): Handle out of line prologues/epilogues.
        (hppa_expand_prologue): If optimizing for space, emit an out of
        line prologue.
        * pa.c (compute_frame_size): Handle out of line prologues/epilogues.
        (hppa_expand_prologue): If optimizing for space, emit an out of
        line prologue.
        (hppa_expand_epilogue): Similarly.
        (override_options): Optimizing for space is not compatable with
        either profiling or PIC code generation.
        * pa.md (outline_prologue_call): New pattern.
        (outline_epilogue_call): Likewise.

From-SVN: r11438