Add liblastfm2 and make tomahawk build against it

thirdparty/liblastfm2/CMakeLists.txt

@@ -0,0 +1,27 @@
+cmake_minimum_required(VERSION 2.6)
+
+set( CMAKE_MODULE_PATH
+  ${CMAKE_MODULE_PATH}
+  ${CMAKE_CURRENT_SOURCE_DIR}/cmake/modules
+  )
+
+if(${CMAKE_BUILD_TYPE} MATCHES "Release")
+  add_definitions(-DNDEBUG)
+endif(${CMAKE_BUILD_TYPE} MATCHES "Release")
+
+# Set up definitions and paths
+add_definitions(${QT_DEFINITIONS})
+include(${QT_USE_FILE})
+
+# Main Library
+add_subdirectory(src)
+
+# Optionally build the fingerprint library
+option(BUILD_FINGERPRINT "Build the lastfm-fingerprint library" ON)
+find_package(LibSamplerate)
+find_package(LibFFTW3)
+
+if (BUILD_FINGERPRINT AND LIBFFTW3_FOUND AND LIBSAMPLERATE_FOUND)
+  add_subdirectory(src/fingerprint)
+endif (BUILD_FINGERPRINT AND LIBFFTW3_FOUND AND LIBSAMPLERATE_FOUND)
+