sqlite: clean up

- Add version 3.7.14.1 again, so that we can work around issues caused
   by the recent 3.7.16.1 update.

 - Drop obsolete version 3.6.x.

 - Consistently use the sqlite version number to name the file of the
   expression.

pkgs/development/libraries/sqlite/3.7.14.1.nix

@@ -0,0 +1,24 @@
+{ stdenv, fetchurl, readline ? null, ncurses ? null }:
+
+assert readline != null -> ncurses != null;
+
+stdenv.mkDerivation {
+  name = "sqlite-3.7.14.1";
+
+  src = fetchurl {
+    url = http://www.sqlite.org/sqlite-autoconf-3071401.tar.gz;
+    sha1 = "c464e0e3efe98227c6546b9b1e786b51b8b642fc";
+  };
+
+  buildInputs = [ readline ncurses ];
+
+  configureFlags = "--enable-threadsafe";
+
+  CFLAGS = "-DSQLITE_ENABLE_COLUMN_METADATA=1 -DSQLITE_SECURE_DELETE=1 -DSQLITE_ENABLE_UNLOCK_NOTIFY=1";
+  LDFLAGS = if readline != null then "-lncurses" else "";
+
+  meta = {
+    homepage = http://www.sqlite.org/;
+    description = "A self-contained, serverless, zero-configuration, transactional SQL database engine";
+  };
+}