Merge pull request #3148 from 9rnsr/fix11982

Issue 11982 - ICE(func.c) With function literal with no body
Merge pull request #3151 from 9rnsr/fix11993

[REG] Issue 11993 - typeof(this) in constraint of member function template should reflect method qualifier
Merge pull request #3061 from ibuclaw/ctorpod

Relax isPOD rules so ctors don't make structs non-POD
Merge branch '2.065' of https://github.com/D-Programming-Language/dmd into 2.065