The source files for libgit.a have been moved into a new "lib/"
directory to clean up the top-level directory and clearly separate
library code.
* ps/libgit-in-subdir:
fixup??? Move libgit.a sources into separate "lib/" directory
Move libgit.a sources into separate "lib/" directory
t/helper: prepare "test-example-tap.c" for introduction of "lib/"
