[Issue 506] New: static import and renamed import of mixin don't work

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=506

           Summary: static import and renamed import of mixin don't work
           Product: D
           Version: 0.173
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P2
         Component: DMD
        AssignedTo: bugzilla at digitalmars.com
        ReportedBy: wbaxter at gmail.com


static import and renamed import of a mixin don't work if the mixin itself has
imports.

This is a continuation of 
http://d.puremagic.com/issues/show_bug.cgi?id=498
which covers the basic import case.  The fix for that however does not fix the
static import and renamed import cases (import sigs=std.signals) cases.

Here's examples:

------
import sigs=std.signals;
class SigObj
{
    mixin sigs.Signal!();
}
void main()
{
}

----

static import std.signals;
class SigObj
{
    mixin std.signals.Signal!();
}
void main()
{
}


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