backends: support absolute/relative paths to nsswitch modules
backends: support absolute/relative paths to nsswitch modules

andyvand/cygnetresolve,andyvand/cygnetresolve,pavlix/netresolve,pavlix/netresolve,pavlix/netresolve,crossdistro/netresolve,crossdistro/netresolve,crossdistro/netresolve,andyvand/cygnetresolve