nfs_parse_url_incomplete: fix use after free in param parsing

if no server is specified flagsp points into urls->server.

Signed-off-by: Peter Lieven <pl@kamp.de>
nfs_parse_url: initialize memory

the urls struct was accidently left unitialized.

Signed-off-by: Peter Lieven <pl@kamp.de>
bump version to 1.8.90

I need this to detect that we have (almost) version 1.9.0 in qemu,
but I think we should do some more testing before releasing 1.9.0.

Signed-off-by: Peter Lieven <pl@kamp.de>
nfs-cp: don't leave file_context->url unitialized

Signed-off-by: Peter Lieven <pl@kamp.de>
Merge pull request #44 from plieven/master

fix 3 flaws detected by valgrind and bump version to intermediate version