v2.3

• Remove automatically-generated build id links in rpm packages.
• Remove gdrcopy-kmod from the Requires field of the gdrcopy rpm package.
• Remove gdrdrv-dkms dependency enforcement from the gdrcopy deb package.
• Add libsubunit0 to the dependency list of the gdrcopy deb package.
• Add apiperf test.
• Revamp gdrdrv to fix race-condition bugs.
• Add an option to build kmod package.
• Split the gdrcopy deb package into meta, libgdrapi, and tests packages.
• Update the package maintainer.
• Various updates in README.