giter8 0.5.3

Closes #16880.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
Google Closure Compiler r2388

Closes #16879.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
libgit2: use development branch for HEAD

master is stable upstream

Closes #16881.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
skytools: remove empty space in url

Closes #16883.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>