gitignore: add .version and *~

Use *~ instead of *.*~, so it covers configure~ too.

Change-Id: If0b4c559727b04532353b267180c9d465b323d12
diff --git a/.gitignore b/.gitignore
index 15329a5..d2f9840 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,8 +3,8 @@
 configure.scan
 
 # autoreconf by-products
+.version
 Makefile.in
-
 aclocal.m4
 autom4te.cache/
 config.guess
@@ -49,7 +49,7 @@
 src/osmo-gapk
 
 # temporary/backup files
-*.*~
+*~
 .*.swp
 /compile
 .dirstamp