build.bash: abort if we hit a known-bad go-fuse version
build.bash: abort if we hit a known-bad go-fuse version

Also, standardize to "if [[ ]] ; then" style.

rfjakob/gocryptfs,davesteele/gocryptfs,rfjakob/gocryptfs,davesteele/gocryptfs,davesteele/gocryptfs,rfjakob/gocryptfs,rfjakob/gocryptfs