(ADJSP): New macro to resolve %$.

(output_move_dconst): New declaration.

(OVERRIDE_OPTIONS): New macro to support PIC.
(FUNCTION_PROLOGUE): Save/Load sb when compiling PIC.
(FUNCTION_EPILOGUE): Restore sb when compiling PIC.
(INITIAL_FRAME_POINTER_OFFSET): Take saved sb into account when PIC.
(LEGITIMATE_CONSTANT_P, GO_IF_LEGITIMATE_ADDRESS): Set
current_function_uses_pic_offset_table if P uses a global symbolic reference.
(ENCODE_SECTION_INFO): New macro to support PIC.

From-SVN: r6603