- in MSC debug info parsing, clearly separate a source file
  information from a compiland (including in linetab structure)
- in ELF debug info parsing, now storing compiland directly
  in symtab_elt while browsing the symtab section (we still
  create twice the compilands, once in stabs/dwarf parsing, 
  a second time in symtab parsing)

A void return type is represented by a FC_END/FC_PAD sequence in the
proc format string. Increment the proc offset by two when a function
returns void.

- DBGHELP_NOLIVE env variable is tested earlier to avoid 
  some strange effects in live target detection
- in WineDbg, delete DBGHELP_NOLIVE before attaching to
  a process, because we know it must be a live target

This should ensure that we do the right thing in the build dir even if
WINEDLLPATH isn't set.

This means that -lfoo will match the library 'foo/libfoo.def' in
addition to just 'libfoo.def'. This allows supporting the Wine source
layout without adding a gazillion path entries.

Samba4 changed the versioning from 3.9.X to 4.0.0tpX-preY.

Test that the return from CertDuplicateCertificateContext is the same
as its parameter.