saveargs: Implement as libsaveargs

@@ -27,17 +27,8 @@
         kaif_invoke.s \
         kmdb_start.s
 
 KMDBSRCS += \
         kmdb_makecontext.c \
-        mdb_amd64util.c \
-        saveargs.c
-
-%.o: $(SRC)/common/saveargs/%.c
-        $(COMPILE.c) $<
-        $(CTFCONVERT_O)
-
-%.ln: $(SRC)/common/saveargs/%.c
-        $(LINT.c) -c $<
+        mdb_amd64util.c
 
 SACPPFLAGS = -D__$(MACH64) -U__$(MACH)
-CPPFLAGS += -I$(SRC)/common/saveargs