.gitignore: sorting entrys in more alphabetical order

.gitignore

@@ -17,19 +17,18 @@ install-sh
 libtool
 ltmain.sh
 m4/
-missing
-src/.deps/
-stamp-h1
-
-# put specific macros in the m4 directory back in
+# warn about specific macros in the m4 directory if they missing
 !m4/ax_*
+missing
+stamp-h1
 
 # ignoring more files generated by the configure script or the make actions
 .libs/
-src/.dirstamp
-src/.libs/
 libcoap*.la
 libcoap*.pc
+src/.deps/
+src/.dirstamp
+src/.libs/
 src/*.o
 src/*.lo