Change code that creates a ZMap to use new ZMap calls that do this.
Add code to load data into a zmap and also to reset one, the latter
operation is unfinished.

Sort out the killing of GUI and threads so they are correct for a ZMap
to kill itself.
Add new states to ZMap so we can better control interaction with user and
with threads.
Each Zmap can now run multiple threads to contact multiple servers.
Make cleanup code more robust by using state of Zmap and state of threads.

Update routines to stringify request/raply enums.

are more appropriate to the new structure.

layer which manager calls. Manager now deals with the list of zmaps and
with calls to create/manage/destroy zmaps using a ZMap interface.
In particular manager does not now have an idle function to check the
status of zmap connections...this is all done within the zmap.

Change zmapwinconn to zmap struct to give a new zmap interface + remove the gtk idle routine, now in each zmap.