Create hopefully rather sane TomahawkConfig.cmake

TomahawkUse.cmake

@@ -0,0 +1,34 @@
+#FIXME: this only handles qt4 and duplicates top level cmakelists: how can we reduce code duplication?
+
+find_package(Qt4 COMPONENTS QtNetwork QtCore QtGui QtSql REQUIRED)
+include( ${QT_USE_FILE} )
+
+set(NEEDED_QT4_COMPONENTS "QtCore" "QtXml" "QtNetwork")
+if(BUILD_GUI)
+    list(APPEND NEEDED_QT4_COMPONENTS "QtGui" "QtWebkit" "QtUiTools" "QtSvg")
+endif()
+
+find_package(Qt4 4.7.0 COMPONENTS ${NEEDED_QT4_COMPONENTS})
+include( ${QT_USE_FILE} )
+
+macro(qt5_use_modules)
+endmacro()
+
+macro(qt_wrap_ui)
+    qt4_wrap_ui(${ARGN})
+endmacro()
+
+macro(qt_add_resources)
+    qt4_add_resources(${ARGN})
+endmacro()
+
+macro(qt_add_translation)
+    qt4_add_translation(${ARGN})
+endmacro()
+
+
+if(NOT TOMAHAWK_CMAKE_DIR)
+    set(TOMAHAWK_CMAKE_DIR ${CMAKE_CURRENT_LIST_DIR})
+endif()
+
+include( "${TOMAHAWK_CMAKE_DIR}/TomahawkAddPlugin.cmake" )