make full init when loading elf

[stsp]

Currently the direct elf loading is
"too direct". It bypasses stub and
all 32bit initialization. It shares
the dj64 handle with comcom64,
and therefore can't be done from
comcom32...
This is a very unportable design.
Explore the possibillilty of full
initialization and a comcom32
port. In case of comcom64, this
will likely mean multiple dj64
clients within a single DPMI client.

[stsp]

Likely not worth a trouble.
If we create a new stubinfo, there
would likely be leaks on exit, including
the leak of a DOS memory region.
Calls to 0x4c should be hooked and
replaced with cleanups.
If we share the stub, then its not
possible to relocate the 32bit code
to a new address.
The current technique seems to work
in most cases, and who cares about
comcom32 or ET_DYN abuses?