Remove .doctrees when cleaning src/doc
Sphinx produces .doctree pickles that can be over 17MB with the
current documentation. Remove them when running "make clean" in
src/doc so that they don't pollute distribution tar files.
Author: Tom Yu <email@example.com>
src/doc/Makefile.in | 3 ++-
1 files changed, 2 insertions(+), 1 deletions(-)