ToolchainInfo: add $(AR), print full path, improve formatting

scripts/ToolchainInfo

@@ -1,16 +1,26 @@
 
 .PHONY: all
 
-all: make cc cxx
+$(info ToolchainInfo)
+$(info Printing out programs used by implicit MAKE targets)
+
+all: make ar cc cxx
 
 make:
-	$(info MAKE:$(MAKE))
+	$(info )
+	$(info MAKE: $(MAKE) ($(shell which $(MAKE))))
 	$(MAKE) --version
 
+ar:
+	$(info )
+	$(info AR: $(AR) ($(shell which $(AR))))
+
 cc:
-	$(info CC:$(CC))
+	$(info )
+	$(info CC: $(CC) ($(shell which $(CC))))
 	$(CC) --version
 
 cxx:
-	$(info CXX:$(CXX))
+	$(info )
+	$(info CXX: $(CXX) ($(shell which $(CXX))))
 	$(CXX) --version