JetDiagnosticsTest migrated to TestGenerator

- test data files renamed from *.jet to *.kt

compiler/testData/diagnostics/tests/controlFlowAnalysis/kt1066.kt

@@ -0,0 +1,36 @@
+//KT-1066 false 'Variable cannot be initialized before declaration'
+
+package kt1066
+
+import java.util.Set
+
+fun randomDigit() = 0.toChar()
+
+fun foo(excluded: Set<Char>) {
+    var digit : Char
+
+    do {
+        digit = randomDigit()
+//      ^^^^^ here!
+    } while (excluded.contains(digit))
+}
+
+fun test() {
+    var sum : Int = 0
+    var first : Int = 1
+    var second : Int = 2
+    var temp : Int //= 0 // variable 'temp' initializer is redundant
+
+    while (true)
+    {
+        if (second > 4000000)
+            break
+
+        if (second % 2 == 0)
+            sum += second
+
+        temp = second
+        second = first + second
+        first = temp
+    }
+}