[Dovecot] 2.0.12 ipwd.c does not compile under solaris

[Roger Fujii]

the new src/lib/ipwd.c introduced in 2.0.12 no longer compiles on 
solaris.   Under solaris,
the *_r routines doesn't pass in result as the last parameter and return 
errno - it just returns result.
obviously a job for configure.....

--
Roger Fujii<r...@lookhere.com>