Makefile: use installation logic compatible with old make version

The installation logic used by the Makefile causes a problem with old
make versions, such as make 3.81. Indeed, the rule "$(DESTDIR)%/" gets
matched even for targets like "$(DESTDIR)$(libdir)/libtinycbor.a". Due
to this, with those old make versions, tinycbor.a is installed as a
directory, and the library is never copied:

make[1]: Entering directory `/home/test/outputs/b1305500555cbb5b959e5be11dee5cf75907f0ce/output/build/tinycbor-v0.3.1'
install -d /home/test/outputs/b1305500555cbb5b959e5be11dee5cf75907f0ce/output/target/usr/bin/cbordump
install -d /home/test/outputs/b1305500555cbb5b959e5be11dee5cf75907f0ce/output/target/usr/lib/libtinycbor.a
install -d /home/test/outputs/b1305500555cbb5b959e5be11dee5cf75907f0ce/output/target/usr/lib/pkgconfig/tinycbor.pc
install -d /home/test/outputs/b1305500555cbb5b959e5be11dee5cf75907f0ce/output/target/usr/include/tinycbor/cbor.h
install -d /home/test/outputs/b1305500555cbb5b959e5be11dee5cf75907f0ce/output/target/usr/include/tinycbor/cborjson.h
make[1]: Leaving directory `/home/test/outputs/b1305500555cbb5b959e5be11dee5cf75907f0ce/output/build/tinycbor-v0.3.1'

To address this, we create the destination directory directly within
the per-file make targets.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Thiago Macieira <thiago.macieira@intel.com>

Makefile

@@ -123,15 +123,17 @@ $(PACKAGE).tar.gz: | .git
 $(PACKAGE).zip: | .git
 	GIT_DIR=$(SRCDIR).git $(GIT_ARCHIVE) --format=zip -o "$(PACKAGE).zip" HEAD
 
-$(DESTDIR)%/:
-	$(INSTALL) -d $@
-$(DESTDIR)$(libdir)/%: lib/% | $(DESTDIR)$(libdir)/
+$(DESTDIR)$(libdir)/%: lib/%
+	$(INSTALL) -d $(@D)
 	$(INSTALL_DATA) $< $@
-$(DESTDIR)$(bindir)/%: bin/% | $(DESTDIR)$(bindir)/
+$(DESTDIR)$(bindir)/%: bin/%
+	$(INSTALL) -d $(@D)
 	$(INSTALL_PROGRAM) $< $@
-$(DESTDIR)$(pkgconfigdir)/%: % | $(DESTDIR)$(pkgconfigdir)/
+$(DESTDIR)$(pkgconfigdir)/%: %
+	$(INSTALL) -d $(@D)
 	$(INSTALL_DATA) $< $@
-$(DESTDIR)$(includedir)/tinycbor/%: src/% | $(DESTDIR)$(includedir)/tinycbor/
+$(DESTDIR)$(includedir)/tinycbor/%: src/%
+	$(INSTALL) -d $(@D)
 	$(INSTALL_DATA) $< $@
 
 install-strip: