Add a mailmap file to change my personal email address in old commits.

sgunderson@bigfoot.com has been de facto dead for a year or two,
and is now definitely dead.

diff --git a/.mailmap b/.mailmap
new file mode 100644 (file)
index 0000000..f42ca7d
--- /dev/null
+++ b/.mailmap
@@ -0,0 +1 @@
+Steinar H. Gunderson <steinar+nageru@gunderson.no> <sgunderson@bigfoot.com>