Always clean rpms and logs from previous builds

I often find myself running "make clean proper", when by default, I
think the old build artifacts should be removed so that the results
directory is pristine at the start of a new build.

As a result, if users wish to keep all build artifacts from a previous
"make build" or "make autospec", they must keep manual backups, as the
tooling no longer keeps them around.

Signed-off-by: Patrick McCarty <patrick.mccarty@intel.com>

Makefile.common

@@ -115,7 +115,7 @@ shell:
 
 # Always rebuild the source rpm
 .PHONY: $(SRPMFILE)
-$(SRPMFILE): $(SPECFILE) $(__allsources) localreponotice
+$(SRPMFILE): $(SPECFILE) $(__allsources) localreponotice clean-old-content
 	@$(MAKE) spdxcheck
 	$(MOCK) --buildsrpm --source=./ --spec=$(SPECFILE) --result=results/ --no-cleanup-after --uniqueext=$(PKG_NAME)
 	mv results/root.log results/srpm-root.log
@@ -156,8 +156,7 @@ pullrebase:
 #help Use MOCK_OPTS environment varible to pass down arbitrary mock options
 #help to autospec.
 #help For more information, see the project at https://github.com/clearlinux/autospec
-autospec: pullrebase localreponotice
-	rm -f results/*src.rpm
+autospec: pullrebase localreponotice clean-old-content
 	@if [ -e $(SPECFILE) ] && ! grep -q "# Generated by: autospec.py" $(SPECFILE) ; then \
 		echo "Specfile already exists and was not created by autospec.py! Aborting."; \
 		exit 1; \

Makefile.shared

@@ -138,6 +138,17 @@ localreponotice:
 		[ -f $(TOPLVL)/repo/opt-in-build ] || sleep 3; \
 	fi >&2
 
+.PHONY: clean-old-rpms clean-old-logs clean-old-content
+clean-old-rpms:
+	rm -rf ./rpms
+	rm -f ./results/*.rpm
+
+clean-old-logs:
+	rm -f ./results/*.log
+
+clean-old-content: clean-old-rpms clean-old-logs
+
+
 .PHONY: help
 ##### Code
 # Make sure that HELPSPACE has exactly HELPLEN spaces in it