Rewrite/fix cygwin1.dbg generation

[Pedro Alves]

Christopher Faylor wrote:

> If that is the case, then this is a welcome change but I'm wondering if
> it really is true.  Since the debug stripping is linked to the way that
> cygwin manages the cygwin heap, it is possible that things only appear
> to work until you allocate more space in the heap.  Has anyone tried the
> above with a program that, say, opens a lot of file handles?
> 

Ah, got it.  VirtualAlloc fails on the first _csbrk, since it
is tripping on the VMA of .gnu_debuglink ...  I assumed it would
not be a problem, since it isn't ALLOCced, but oh well...
I tried adding an EXCLUDE/NOLOAD flag to .gnu_debuglink, but no
can do.

10 .cygheap      000a0000  611e0000  611e0000  00000000  2**2
                  ALLOC
11 .gnu_debuglink 00000010  61280000  61280000  001d0a00  2**2
                  CONTENTS, READONLY, DEBUGGING

I'll come up with a different fix.

Cheers,
Pedro Alves