- fixed a couple of bugs in ntdll environment functions (one in trace,

- fixed a couple of bugs in ntdll environment functions (one in trace,
  the other one in environment variable expansion)
- the process parameters, when passed thru wineserver, are now fully
  handled in ntdll, they are stored in the RTL_USER_PROCESS_PARAMETERS
  structure.
- later on in kernel32 loading sequence, those parameters are copied
  into STARTUPINFO shadow structures
- later modification to those paramters are now reflected to the
  RTL_USER_PROCESS_PARAMETERS structure (and STARTUPINFO is kept
  untouched) (for example, StdHandle setting) (Win 2k behaves like this)
- ENVDB has been removed
- command line inheritance (from unix command line) is now purely in ntdll
- all kernel32 environment functions now rely on their ntdll counterparts
- goodies: input/output handle inheritance while asking for a detached
  console is better handled; a few more kernel32 environment tests now
  pass ; silenced a valgrind warning in process creation