Prepare release 0.6 and add version string output files.

Author: jahnf

CMakeLists.txt

@@ -78,10 +78,17 @@ set_target_properties(projecteur PROPERTIES
   VERSION_MAJOR 0
   VERSION_MINOR 6
   VERSION_PATCH 0
-  VERSION_TYPE develop
+  VERSION_TYPE release
 )
 add_version_info(projecteur "${CMAKE_CURRENT_SOURCE_DIR}")
 
+# Create files containing generated version strings, helping package maintainers
+get_target_property(PROJECTEUR_VERSION_STRING projecteur VERSION_STRING)
+# Arch Linux = PKGBUILD/makepkg: '-' is not allowed in version number
+string(REPLACE "-" "" PROJECTEUR_VERSION_STRING_ARCHLINUX "${PROJECTEUR_VERSION_STRING}")
+file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/version-string" "${PROJECTEUR_VERSION_STRING}")
+file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/version-string.archlinux" "${PROJECTEUR_VERSION_STRING_ARCHLINUX}")
+
 # Translation
 list(APPEND languages de fr es)
 set(ts_directories "${CMAKE_CURRENT_SOURCE_DIR}/i18n")