Add routines to read mailmap from libgit
treee1ce2816a674e138d0eac95fe346c4eaee20c456
-rw-r--r-- 512 .gitignore
-rw-r--r-- 543 .gitmodules
-rw-r--r-- 224 .mailmap
drwxr-xr-x - Languages
-rw-r--r-- 2173 build.txt
drwxr-xr-x - common
drwxr-xr-x - contrib
drwxr-xr-x - doc
drwxr-xr-x - ext
-rw-r--r-- 1742 release.txt
drwxr-xr-x - src
drwxr-xr-x - test