Vim 8.1 release

Update version number and information.  Fix a couple of tests.
diff --git a/src/proto/ops.pro b/src/proto/ops.pro
index b00cc50..13e063e 100644
--- a/src/proto/ops.pro
+++ b/src/proto/ops.pro
@@ -21,7 +21,7 @@
 int do_execreg(int regname, int colon, int addcr, int silent);
 int insert_reg(int regname, int literally_arg);
 int get_spec_reg(int regname, char_u **argp, int *allocated, int errmsg);
-int cmdline_paste_reg(int regname, int literally, int remcr);
+int cmdline_paste_reg(int regname, int literally_arg, int remcr);
 void adjust_clip_reg(int *rp);
 void shift_delete_registers(void);
 int op_delete(oparg_T *oap);