Contrib: add jpeg

contrib/src/jpeg/SHA512SUMS

+9a8de546c1d0746a09f33cc71e7a3e6c584fdd55efb76b2e1fdebf7b649bcc0dde2bff32be5ceb19d7b57ca3fb0f84902d2fd76d5e9f43a1cc4c04777d061a24  jpegsrc.v8c.tar.gz

contrib/src/jpeg/rules.mak

+# jpeg
+
+JPEG_VERSION := 8c
+JPEG_URL := http://www.ijg.org/files/jpegsrc.v$(JPEG_VERSION).tar.gz
+
+PKGS += jpeg
+
+$(TARBALLS)/jpegsrc.v$(JPEG_VERSION).tar.gz:
+	$(call download,$(JPEG_URL))
+
+.sum-jpeg: jpegsrc.v$(JPEG_VERSION).tar.gz
+
+jpeg: jpegsrc.v$(JPEG_VERSION).tar.gz .sum-jpeg
+	$(UNPACK)
+	mv jpeg-$(JPEG_VERSION) jpegsrc.v$(JPEG_VERSION)
+	$(MOVE)
+
+.jpeg: jpeg
+	cd $< && $(HOSTVARS) ./configure $(HOSTCONF)
+	cd $< && $(MAKE) install
+	cd $< && $(RANLIB) $(PREFIX)/lib/libjpeg.a
+	touch $@