qsort_r appeared in glibc 2.8
Merge pull request #1609 from ethomson/qsort_r_glibc

qsort_r appeared in glibc 2.8
Fix documentation of git_branch_delete.

The reference should be freed by the user, not the library.
Merge pull request #1612 from drodriguez/fix-branch-delete-docs

Fix documentation of git_branch_delete.
tests: don't verify SSH unsupported with GIT_SSH
Merge pull request #1613 from schu/transport-ssh

tests: don't verify SSH unsupported with GIT_SSH
packbuilder: also write index in git_packbuilder_write

git_packbuilder_write() used to write a packfile to the passed file
path. Instead, ask for a destination directory and create both the
packfile and an index, as most users probably do expect.
Merge pull request #1614 from schu/packbuilder-write

packbuilder: also write index in git_packbuilder_write