Clean up root .gitignore

We had a few files listed in here that we have checked in to our repo, which
doesn't make a whole lot of sense. Also alphabetize the list while we are at
it.

Signed-off-by: Dan McGee <dan@archlinux.org>

.gitignore

@@ -1,30 +1,21 @@
-Makefile
-Makefile.in
-mkinstalldirs
+*~
+*.o
 aclocal.m4
 autom4te.cache
-config.guess
 config.h
 config.h.in
 config.log
 config.status
 config.status.lineno
-config.rpath
-config.sub
 configure
 configure.lineno
-depcomp
-install-sh
-libtool
-ltmain.sh
-missing
-stamp-h1
-
-*.o
-*~
-root
-tags
-cscope.out
 cscope.in.out
+cscope.out
 cscope.po.out
+libtool
+Makefile
+Makefile.in
 pacman-*.tar.gz
+root
+stamp-h1
+tags