contrib: add sqlite

contrib/src/sqlite/SHA512SUMS

+fd6761a6c8f76d137cc8c98b8ae77f8f4206dbf187d66e324f7dc6a79eb752d441446139216eadb534cf5601345c2ea1da3312305e24c762b6e16318cf4adb5e  sqlite-3.6.20.tar.gz

contrib/src/sqlite/rules.mak

+# sqlite
+
+SQLITE_VERSION := 3.6.20
+SQLITE_URL := http://www.sqlite.org/sqlite-amalgamation-$(SQLITE_VERSION).tar.gz
+
+PKGS += sqlite
+
+ifeq ($(call need_pkg,"sqlite3"),)
+PKGS_FOUND += sqlite
+endif
+
+$(TARBALLS)/sqlite-$(SQLITE_VERSION).tar.gz:
+	$(call download,$(SQLITE_URL))
+
+.sum-sqlite: sqlite-$(SQLITE_VERSION).tar.gz
+
+sqlite: sqlite-$(SQLITE_VERSION).tar.gz .sum-sqlite
+	$(UNPACK)
+	$(MOVE)
+
+.sqlite: sqlite
+	cd $< && $(HOSTVARS) ./configure $(HOSTCONF)
+	cd $< && make && make install
+	touch $@