Issue 10998 (REG 2.063) & Issue Issue 10980 - fix for compile-time postblit  call check

[Issue 10998](http://d.puremagic.com/issues/show_bug.cgi?id=10998) - [REG 2.063] compile-time postblit call check is incorrectly suppressed
[Issue 10980](http://d.puremagic.com/issues/show_bug.cgi?id=10980) - static initialization of immutable structs with disabled postblit fails