Remove cpack (#107)

* remove "building with cpack" from CMakeLists.txt - not used anymore
* Added very basic .gitattributes

.gitattributes

@@ -0,0 +1,18 @@
+# remove files from deployment using `git archive`
+
+# git files
+.gitattributes export-ignore
+.gitignore     export-ignore
+
+
+# several files and directories we never want to export 
+# a little bit belt and braces as the most of these files
+# should never ever be in the repository
+
+.*~        export-ignore
+.kdev4     export-ignore
+release.sh export-ignore
+
+/build export-ignore
+/temp  export-ignore
+/tmp   export-ignore

CMakeLists.txt

@@ -381,15 +381,3 @@ lxqt_create_pkgconfig_file(
     INSTALL
 )
 #************************************************
-
-
-# building tarball with CPack -------------------------------------------------
-include(InstallRequiredSystemLibraries)
-set(CPACK_PACKAGE_VERSION_MAJOR ${LXQT_MAJOR_VERSION})
-set(CPACK_PACKAGE_VERSION_MINOR ${LXQT_MINOR_VERSION})
-set(CPACK_PACKAGE_VERSION_PATCH ${LXQT_PATCH_VERSION})
-set(CPACK_GENERATOR TBZ2)
-set(CPACK_SOURCE_GENERATOR TBZ2)
-set(CPACK_SOURCE_IGNORE_FILES /build/;.gitignore;.*~;.git;.kdev4;temp)
-include(CPack)
-