Add .tag file and fix .gitignore

Do not ignore all .* files by default, if there is any file that
should really be ignored then it should be added explicitly in
the future.

Change-Id: I94a6524d05d87745c8a197e1142a60bf70d17f16
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
Reviewed-by: Milian Wolff <milian.wolff@kdab.com>
Reviewed-by: Sergio Ahumada <sahumada@blackberry.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/.tag b/.tag
new file mode 100644
index 0000000..6828f88
--- /dev/null
+++ b/.tag
@@ -0,0 +1 @@
+$Format:%H$