Hard-code line endings of shell scripts to LF

No idea whether this is the right way to do this.

.gitattributes

@@ -1,3 +1,6 @@
 .git_archival	export-subst
 .gitattributes	export-ignore
 .gitignore	export-ignore
+
+*.sh text eol=lf
+tools/osx_bundle_libs text eol=lf

tools/osx_bundle_libs

@@ -48,7 +48,7 @@ bundle_dependencies() {
 			echo "Cannot find ${_library_name}." >&2
 			exit 1
 		fi
-		
+
 		_base="$(basename "${_library_name}")"
 		_bundle_path="${_frameworks_folder_path}/${_base}"
 
@@ -70,7 +70,7 @@ bundle_dependencies() {
 		echo "Bundling '${_library_path}' as '${_base}'..."
 		cp "${_library_path}" "${_bundle_path}"
 		chmod u+w "${_bundle_path}"
-		
+
 		# Set a new install name for this dylib
 		"${_install_name_tool}" -id "${_id}" "${_bundle_path}"