Python docs: use prepend_create_path

prepend_path doesn't do anything if path doesn't already exist, so use
prepend_create_path.
shiboken: recommend opt paths in build helpers

Shiboken asks other packages to use Cellar paths to Python's include
path. Make sure it uses the opt path instead.

Closes #34893, resolves #34783.
shiboken: update 1.2.2 bottle.
python 2.7.9

Closes #34869.

Signed-off-by: Tim D. Smith <git@tim-smith.us>
python: update 2.7.9 bottle.
zlib & sqlite3: pkgconfig support

native pkg-config support for zlib and sqlite to elimate the need
to pass flags to configure or make stages in formulae.

Closes #34765.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>
RabbitMQ 3.4.2

Closes #34895.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>
rabbitmq: update 3.4.2 bottle.
davix 0.4.0-1

Closes #34894.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>
davix: update 0.4.0-1 bottle.
nexus 2.11.0-02

nexus: Update to 2.11.0-02

Closes #34900.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>
Merge remote-tracking branch 'upstream/master'