Some work on the "Bochs side" of the new slirp module
- added support for a separate slirp config file specified with the "script"
  parameter. Added sample config in the "misc" subdirectory.
- now creating one logfunctions object per slirp instance and added new function
  slirp_warning() to send error messages to the Bochs log.
- regenerated dependencies for the iodev/network Makefile and updated command
  line example for generating them.


git-svn-id: svn://svn.code.sf.net/p/bochs/code/trunk@12225 6c8e4198-a580-4521-a02f-c9ae86df1db9