mailmap: add mappings for myself

Add aliases for various alternative email addresses.
diff --git a/.mailmap b/.mailmap
index 70d9a36..bba7920 100644
--- a/.mailmap
+++ b/.mailmap
@@ -22,6 +22,8 @@
 #
 # Please keep this file sorted.
 
+<compnerd@compnerd.org> <abdulras@fb.com>
+<compnerd@compnerd.org> <abdulras@google.com>
 <i@maskray.me> <maskray@google.com>
 <qiucofan@cn.ibm.com> <qiucf@cn.ibm.com>
 <rnk@google.com> <reid@kleckner.net>
@@ -30,3 +32,4 @@
 Jon Roelofs <jonathan_roelofs@apple.com> Jonathan Roelofs <jonathan@codesourcery.com>
 Jon Roelofs <jonathan_roelofs@apple.com> Jonathan Roelofs <jroelofs@jroelofs.com>
 Martin Storsjö <martin@martin.st>
+Saleem Abdulrasool <compnerd@compnerd.org> <compnerd@compnerd.org>