tree cf82764554dd872b752d0d6a47d7df9b681c4c61
parent 98d1fee994302f5e2ad7a7b60de2f2d74f35408b
author Jacob Marble <jacobmarble@google.com> 1454445323 -0800
committer Jacob Marble <jacobmarble@google.com> 1454448863 +0000

Make internal libevhtp optional.

Useful for packaging, when the target already has a libevhtp package. To
use:
make USE_INTERNAL_LIBEVHTP=0

Change-Id: Ia23c6ad9da67eb58ebfd710aa0a3b402408df6d1
Reviewed-on: https://weave-review.googlesource.com/2461
Reviewed-by: Vitaly Buka <vitalybuka@google.com>