Converted ecf files to 1-16-0, to use a single ecf file for all variants (void-safe, non-void-safe, ...). Keep *-safe.ecf as redirection to avoid breaking existing -safe.ecf projects.

examples/demo/site/modules/core/scripts/user_profile.sql

@@ -0,0 +1,6 @@
+CREATE TABLE user_profiles(
+  `uid` INTEGER NOT NULL CHECK("uid">=0),
+  `key` VARCHAR(255) NOT NULL,
+  `value` TEXT,
+  CONSTRAINT PK_uid_key PRIMARY KEY (uid,key)
+);