[libiodata] Add qt5 variant
[libiodata] Remove qmlog dependency, add log macros, simplify includes
[libiodata] Add Qt4 OBS build files
[libiodata] Update package source name, qmake macro for Qt5 build
[libiodata] Include libiodata-qt5 in generated Qt5 header files
[libiodata] Bump version to 0.19
Add copyright header to log.h
Define package versions correctly in spec files
Use $$[QT_INSTALL_DATA] to for package configuration paths

Remove unnecessary prf target from src.pro.
Merge pull request #2 from pgerdt/qt5

Qt5 build setup, remove qmlog dependency, simplify header includes