Update bru.c to support new API for fuse readdir calls

Added fuse_readdir_flags support for bru_readdir() to allow the "filler" function to be properly called with the newest versions of Fuse.
installer: default tmp to /mnt/bedrock/tmp
Merge pull request #9 from paulschellin/patch-1

Update bru.c to support new API for fuse readdir calls
Merge branch 'master' of github.com:paradigm/bedrocklinux-userland into 1.0beta1
brp: modifications to work with newer fuse
brp: readdir() argument had wrong name
installer: source_fuse use newer version
brp: one filler() was still missing a "flags" argument