The meta-oe provides since commit 8700ba38@openembedded/meta-openembedded
(commit date: 2016-01-14) [1] a recipe for the POCO C++ Library.
Consequently, this commit removes the libpoco recipe in the
meta-ros layer.

As meta-ros already depends on the meta-oe layer, the poco
recipe is available in release version since 2016-01-14,
and the poco recipe in meta-ros is redundant for these versions.
However, this commit still provides the currently latest poco
recipe [2] for users that are not using a recent version of the
meta-oe layer.

[1] http://cgit.openembedded.org/meta-openembedded/commit?id=8700ba38804af3c27f3662737f679afa1bdc86da
[2] http://cgit.openembedded.org/meta-openembedded/tree/meta-oe/recipes-support/poco?id=0a2bd4f9784253a8a8dda35e3c4dbd75931d3564



Signed-off-by: Lukas Bulwahn <lukas.bulwahn@oss.bmw-carit.de>

Makes it apply to any version of boost from here on.

Signed-off-by: Khem Raj <raj.khem@gmail.com>

The ROS package cv_bridge needs the Boost.Python library. This
commit adds a bbappend file that includes Boost.Python in the
boost recipe using PACKAGECONFIG.
This PACKAGECONFIG for boost is available since commit
7568bfdd114597956a1da68746f207ec7f93a48d
in the openembeddded-core repository [1].

[1] http://cgit.openembedded.org/openembedded-core/commit/?id=7568bfdd114597956a1da68746f207ec7f93a48d

Instead of maintaining a copy of the tinyxml recipe from the meta-oe layer, we
require that the installation also includes the meta-oe layer.
We updated the README accordingly and also updated the description of the
current setup. We also updated and tuned the CONTENT file.

This commit resolves issue #45.

Replace CXXFLAGS += "-fPIC" with EXTRA_CXXFLAGS to allow native
build and use relative paths to simplify recipe.

Signed-off-by: Stefan Herbrechtsmeier <stefan@herbrechtsmeier.net>