Reorganizing internal_getlogin() -- modified Pierre patch

[Earnie Boyd]

"Pierre A. Humblet" wrote:
> 
> I also tried to build the current cvs but get an error
> In file included from ../../../../src/winsup/cygwin/assert.cc:13:
> /src/winsup/w32api/include/wingdi.h:2521: `HENMETAFILE' was not declared in
> this scope
> 

My bad.  Fixed.

Earnie.