More cleanups in removing sys-proclaim

Actually remove the rule for building tools/sys-proclaim.lisp.

Add macro GCL_MAXIMA so that we're consistent with other lisp that
have FOO_MAXIMA (usually to distinguish between a core file and an
executable).

Remove gcl_depends_targets and just use GCL_MAXIMA like other lisps.

To test these changes, I build maxima from scratch with gcl.  Then I
touched cl-info.lisp and ran make.  Only cl-info was compiled;
everything else was loaded.

Author: rtoy

src/Makefile.am

@@ -287,27 +287,16 @@ CLEAN_TARGETS += clean-sbcl
 if GCL
 
 gcllibdir = $(verpkglibdir)/binary-gcl
-
-EXTRA_SCRIPTS += binary-gcl/maxima
-gcllib_SCRIPTS = binary-gcl/maxima
+GCL_MAXIMA = binary-gcl/maxima
+EXTRA_SCRIPTS += $(GCL_MAXIMA)
+gcllib_SCRIPTS = $(GCL_MAXIMA)
 
 EXECUTEGCL = $(GCL_NAME)
-BUILT_FILES += binary-gcl/maxima
-
-gcl_depends_targets = (list "binary-gcl/maxima")
-
-#tools/sys-proclaim.lisp: maxima.system *.lisp
-#	rm -rf binary-gcl
-#	touch sys-proclaim.lisp
-#	$(MAKE) bd
-#	echo '(load "generate-sys-proclaim.lisp") (system::quit)' | $(EXECUTEGCL)
-#	rm -rf binary-gcl
-#	mkdir -p tools
-#	mv sys-proclaim.lisp tools
+BUILT_FILES += $(GCL_MAXIMA)
 
-gcl: binary-gcl/maxima
+gcl: $(GCL_MAXIMA)
 
-binary-gcl/maxima: gcl-depends.mk
+$(GCL_MAXIMA): gcl-depends.mk
 	$(MAKE) bd
 if GCL_ALT_LINK
 	echo '$(QUIET) $(LOADDEFSYSTEM) $(DEFSYSTEMCOMPILE) (system::quit)' | $(EXECUTEGCL)
@@ -318,7 +307,7 @@ else
 endif
 
 gcl-depends.mk: maxima.system Makefile *.lisp
-	echo $(call MAKE_DEPENDS,$(gcl_depends_targets),gcl-depends.mk.tmp) '(system::quit)' | $(EXECUTEGCL)
+	echo $(call MAKE_DEPENDS,$(GCL_MAXIMA),gcl-depends.mk.tmp) '(system::quit)' | $(EXECUTEGCL)
 	sed -e "s#\\\\#/#g" < gcl-depends.mk.tmp > gcl-depends.mk
 -include gcl-depends.mk