I was just trying to do a build against 8.5, and found...

gcc -g -O2 -Wall -Wmissing-prototypes -Wmissing-declarations -I../.. -fpic -I/home/chris/dbs/postgresql-git-head/include/ -I/home/chris/dbs/postgresql-git-head/include/server/  -c -o slony1_funcs.o slony1_funcs.c
slony1_funcs.c: In function ‘slon_quote_literal’:
slony1_funcs.c:1029: warning: pointer targets in passing argument 1 of ‘pg_mblen’ differ in signedness
slony1_funcs.c: In function ‘slon_quote_identifier’:
slony1_funcs.c:1110: error: too few arguments to function ‘ScanKeywordLookup’
make: *** [slony1_funcs.o] Error 1

There has apparently been two parameters added to ScanKeywordLookup()

   src/include/parser/keywords.h

I guess we need to detect this...
-- 
(reverse (concatenate 'string "ofni.sailifa.ac" "@" "enworbbc"))
Christopher Browne
"Bother,"  said Pooh,  "Eeyore, ready  two photon  torpedoes  and lock
phasers on the Heffalump, Piglet, meet me in transporter room three"