You don't need Anope-1.7.18-svn for inspircd 1.1 support, you only need the protocol module (inspircd11.c and inspircd11.h). You can use Anope-1.7.18 release.
I've tarred them up from svn at:
http://ircd.shellnode.org/inspircd11.tar.bz2 To use:
1. untar this tarball and place the contents of the inspircd11 directory into Anope-1.7.18/src/protocol.
2. (re)compile anope as normal.
3. Specify IRCDModule "inspircd11" in the conf file.
This tarball *should* also fix the 2 known bugs as well (SVSHOLD and vIdent). No promises though. As an alternative to using IRCDmodule "inspircd11", rename both the .c and .h files inspircd.c and inspircd.h, copy to the src/protocol directory. You will have to edit inspircd11.c and change the include inspircd11.h to include inspircd.h
If you use my supplied tarbar you do so at your own risk! It's supplied "as-is" and all support requests will be ignored. If you can't make it work .. sorry about your luck.
[Edited on 19-2-2007 by katsklaw]