This commit includes further changes to build rospack-native.

Some minor improvements to get roscore running

libpoco: new recipe based on digitalstrom's recipe (resolves #118)

Before this commit, the following sequence of bitbake commands
failed because the path was set during compile time, and not at
runtime. After the patch from Dirk Thomas, the following sequence
now works.

bitbake nodelet-topic-tools -c cleansstate && \
bitbake dynamic-reconfigure && bitbake nodelet-topic-tools

The error message when compiling nodelet, which links the poco library, is:

| Linking CXX executable devel/lib/nodelet/nodelet
| /home/lukas/oe-core/build/tmp-eglibc/sysroots/x86_64-linux/usr/bin/cmake -E cmake_link_script CMakeFiles/nodelet.dir/link.txt --verbose=1
| /home/lukas/oe-core/build/tmp-eglibc/sysroots/x86_64-linux/usr/bin/armv5te-oe-linux-gnueabi/arm-oe-linux-gnueabi-g++    -march=armv5te -marm -mthumb-interwork  --sysroot=/home/lukas/oe-core/build/tmp-eglibc/sysroots/qemuarm  -O2 -pipe -g -feliminate-unused-debug-types -fpermissive -fvisibility-inlines-hidden -fpermissive  -march=armv5te -marm -mthumb-interwork  --sysroot=/home/lukas/oe-core/build/tmp-eglibc/sysroots/qemuarm  -O2 -pipe -g -feliminate-unused-debug-types -fpermissive -fvisibility-inlines-hidden -Wl,-O1 -Wl,--hash-style=gnu -Wl,--as-needed  -Wl,-O1 -Wl,--hash-style=gnu -Wl,--as-needed CMakeFiles/nodelet.dir/src/nodelet.cpp.o  -o devel/lib/nodelet/nodelet -rdynamic devel/lib/libnodeletlib.so -luuid -lbondcpp -luuid -lcpp_common -lroscpp_serialization -lrostime -lboost_date_time-mt -lboost_system-mt -lboost_thread-mt -lroscpp -lboost_signals-mt -lboost_filesystem-mt -lrosconsole -lboost_regex-mt -llog4cxx -lxmlrpcpp -ltinyxml -lclass_loader -lPocoFoundation -ldl -lconsole_bridge -lroslib -Wl,-rpath,/home/lukas/oe-core/build/tmp-eglibc/work/armv5te-oe-linux-gnueabi/nodelet/1.8.0-r0/nodelet_core-1.8.0/nodelet/build/devel/lib:
| /home/lukas/oe-core/build/tmp-eglibc/sysroots/qemuarm/usr/lib/libPocoFoundation.so: undefined reference to `_pcre_ucd_stage1'
| /home/lukas/oe-core/build/tmp-eglibc/sysroots/qemuarm/usr/lib/libPocoFoundation.so: undefined reference to `_pcre_ucd_records'
| /home/lukas/oe-core/build/tmp-eglibc/sysroots/qemuarm/usr/lib/libPocoFoundation.so: undefined reference to `_pcre_ucp_gentype'
| /home/lukas/oe-core/build/tmp-eglibc/sysroots/qemuarm/usr/lib/libPocoFoundation.so: undefined reference to `_pcre_ucd_stage2'
| collect2: error: ld returned 1 exit status
| make[2]: *** [devel/lib/nodelet/nodelet] Error 1

This commit formats the libpoco recipe to follow the common
OpenEmbedded style more closely and removes a comment that points
to warnings that do not occur with the current recipe.

A previously written recipe for the poco library and
a special OpenEmbedded config file for poco is included from
https://gitorious.digitalstrom.org/dss-oe/dss-oe/blobs/raw/master/dS/meta-dss11-production/recipes-support/poco/poco_1.3.6p2.bb
and https://gitorious.digitalstrom.org/dss-oe/dss-oe/blobs/raw/master/dS/meta-dss11-production/recipes-support/poco/files/OE



This recipe and the config is redistributed here under the same
license agreement as the original.

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

Updating to hydro release version

When updating from 1.9.41 to 1.9.47, the commit
https://github.com/ros/ros_comm/commit/c5dfa6305e883f76dc2aa52d27d2977e3d66ea2e
adds a routine in the CMakeLists.txt to find the pthread library.
This routine is not suitable for the use with our tool chain, i.e.,
it reports an error (cf. #125) when using roscpp-native.

This commit adds a patch that reverts that change in roscpp's
CMakeLists.txt.

The previously applied patch is incorporated in the hydro release
version of the tf package. Also, the new tf package has further
dependencies.

For the update of the tf package to the hydro release version,
new recipes for the geometry-experimental repository are provided
in this commit.

The previously applied patch is now incorporated in the hydro
release version.

In this commit, the angles directory is renamed to match repository
name in hydro/release.yaml, and a patch is required probably
because of the new catkin version.

The previous patch applied specifically in the recipe is
incorporated in the new version, and was removed from the recipe.

As the license text of the xmlrpcpp changed, the license checksum
is adjusted.

The rosunit patch required some minor adjustments.

To update to the hydro release version, the genpy patch required
some minor adjustments.

To update the hydro release version, the genlisp required some
minor adjustments.

To update to the hydro release version, the gencpp patch required
some minor adjustments.

To update to the hydro release version, the genmsg patch required
some minor adjustments.