scripts: robustify orocreate-pkg for failing rospack

Signed-off-by: Ruben Smits <ruben.smits@mech.kuleuven.be>
install package.xml file in install_prefix/share/package path

Signed-off-by: Ruben Smits <ruben.smits@intermodalics.eu>
install orocreate-pkg templates in correct package folder

Signed-off-by: Ruben Smits <ruben.smits@intermodalics.eu>
install orocreate-pkg templates in correct package folder

Signed-off-by: Ruben Smits <ruben.smits@intermodalics.eu>
Merge branch 'master' of gitorious.org:orocos-toolchain/ocl
orocreate-pkg: add pkgname prefix for support library

Signed-off-by: Ruben Smits <ruben.smits@intermodalics.eu>
Merge remote-tracking branch 'upstream/master'