libostree: Reformat bootloader titles

Use the pattern:

  $PRETTY_NAME [$COMMIT_VERSION] (ostree[:$OSNAME][:$DEPLOYMENT_INDEX])

$OSNAME is only shown if there are multiple values.

$COMMIT_VERSION refers to the version tag in the commit's metadata.

$DEPLOYMENT_INDEX is only shown if no $COMMIT_VERSION is available.

https://bugzilla.gnome.org/show_bug.cgi?id=739416
commit: Split out file processing into helper function

There should be no logic change here, just reducing indentation.
build: Distribute grub2-15_ostree
Fix GFile leak in ostree_repo_constructed()
repo: Remove unused remote-cache dir

Unused leftover from when ostree had pack files; minor cleanup.

https://bugzilla.gnome.org/show_bug.cgi?id=739746
admin-test: Fix two typos in bootloader UI change

Based on a patch from Giuseppe Scrivano <gscrivan@redhat.com>
ostree-repo-pull: Remove currently #if 0 static delta code

We can readd this in the static deltas work.

Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
tests: fix intermittent failure for test-sysroot

libtestExec doesn't run twice the same process now.

Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
syslinux: Adapt to bootloader UI changes

This was a side-effect of the bootloader UI changes in bug 739416,
but should now be sufficiently future-proofed with code comments.
Revert "ostree-repo-pull: Remove currently #if 0 static delta code"

This reverts commit 1c2e20af25b21abc0dee1547a0d5bad1a21c0b58.
Static deltas support

https://bugzilla.gnome.org/show_bug.cgi?id=721799
test-rollsum: Process all input, print more statistics

Copying the bup code, we need to loop over all chunks even after
hitting the rollsum returning 0.

Also print more statistics.
fix --help for static-delta

Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
test: Fix invocation of static-delta

Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>