On the fsx branch:  Merge the new svn_stringbuf_appendfill API (r1489949)
from /branches/fsfs-format7. The addtion of libsvn_fs_fs/reps.* was reverted.

git-svn-id: https://svn.apache.org/repos/asf/subversion/branches/fsx@1507999 13f79535-47bb-0310-9956-ffa450edef68