hpux.h (TARGET_HPUX_LD): New, define true.

hpux.h (TARGET_HPUX_LD): New, define true.

	* config/ia64/hpux.h (TARGET_HPUX_LD): New, define true.
	(ASM_FILE_END) New.
	* config/ia64/ia64.h (TARGET_HPUX_LD): New, define false.
	* config/ia64/ia64-protos.h (ia64_hpux_asm_file_end): New.
	* config/ia64/ia64.c (ia64_asm_output_external): Create list
	of external functions if TARGET_HPUX_LD is true.
	(ia64_hpux_add_extern_decl): New, routine to put names on
	list of external functions.
	(ia64_hpux_asm_file_end): Put out declarations for external
	functions if and only if they are used.

From-SVN: r56986