JET-140 Change function type syntax

and tests for
JET-168 Improve the parser for function and tuple types as receiver types

idea/testData/psi/functionReceivers/PropertiesWithFunctionReceivers.jet

@@ -0,0 +1,35 @@
+val {() : ()}.foo
+val {foo.bar.() : ()}.foo
+
+val {foo.bar.() : ()}.foo = foo
+   get() {}
+   set(it) {}
+
+val {foo.bar.() : ()}.foo = foo
+   get() : Foo {}
+   set(it) {}
+
+
+val {foo.bar.() : ()}.foo : bar = foo
+   [a] public get() {}
+   virtual set(a : b) {}
+
+
+val {foo.bar.() : ()}.foo : bar = foo
+   virtual set(a : b) {}
+
+
+val {foo.bar.() : ()}.foo : bar = foo
+   [a] public get() {}
+
+// Error recovery:
+
+val {foo.bar.() : ()}.foo = foo
+   set) {}
+   dfget() {}
+
+val {foo.bar.() : ()}.foo = foo
+   get(foo) {}
+   set() {}
+   set() {}
+