When installing a library from source and python 3 is enabled, first run
the installation process with python 2 enabled to ensure the library is
also installed under python 2 for any services not yet running under
3. The python 3 version is installed second so that command line tools
installed with libraries are installed under python 3 when python 3 is
enabled.
Change-Id: Ibb0f7a68d21081bf7652a0c1515080c0c54888ca
Signed-off-by: Doug Hellmann <doug@doughellmann.com>