read user from ~/.netrc before reading /etc/netrc

Signed-off-by: Mark Oteiza <mvoteiza@udel.edu>

offlineimap/repository/IMAP.py

@@ -169,6 +169,14 @@ class IMAPRepository(BaseRepository):
             if netrcentry:
                 return netrcentry[0]
 
+        try:
+            netrcentry = netrc.netrc().authenticators(self.gethost())
+        except IOError as inst:
+            if inst.errno not in (errno.ENOENT, errno.EACCES):
+                raise
+        else:
+            if netrcentry:
+                return netrcentry[0]
         try:
             netrcentry = netrc.netrc('/etc/netrc').authenticators(self.gethost())
         except IOError as inst: