CT foreaches

[monkyyy]

```d
import std;
void foo(int i:0)()=>"foo".writeln;
void foo(int i:1)()=>"bar".writeln;
void foo(int i:2)()=>"foobar".writeln;
void main(){
	foreach(i,alias b; AliasSeq!("foo","bar")){
		pragma(msg, b.stringof);
	        break;
	}
	pragma(msg,"---");
	foreach(i,enum b; AliasSeq!("foo","bar")){
		pragma(msg, b.stringof);
		break;
	}
	pragma(msg,"---");
	static foreach(i;0..3){
		pragma(msg, i.stringof);
		//break; //the scope error
	}
	pragma(msg,"---");
	foreach(enum i;0..3){// ERROR ISNT CT. ISNT AN ENUM
		pragma(msg, i.stringof);
		//foo!i; //doesnt compile
		break;
	}
}
```

Theres bugs and unintended features here :D ; alias foreach is 
undocumented even in the template book; the dip 1010 code block 
that *may* be why this behavior exists doesnt actaully work, the 
docs were wrong a week ago

etc. etc.

currently I believe:

a) static makes it a block, makes enum or alias infered
b) enum or alias of aliasSeq, whoever made thought there be an 
upgrade to fully generalize the syntax
c) the dip 1010 section was ambiguous if it was real causing enum 
to be ignored

anyone got any code blocks?