Improve inference on generics for callable references

#KT-10711 Fixed
 #KT-12802 Fixed
 #KT-12964 Fixed
 #KT-15439 Fixed

Analyze callable references in `dependent` mode, then complete them with
respect to expected types

compiler/testData/diagnostics/tests/callableReference/generic/specialCalls.txt

@@ -0,0 +1,6 @@
+package
+
+public fun </*0*/ T> bar(/*0*/ x: T): T
+public fun baz(/*0*/ i: kotlin.Int): kotlin.Int
+public fun nullableFun(): ((kotlin.Int) -> kotlin.Int)?
+public fun test(): kotlin.Unit