Change cursor to blinking unline using ANSI sequences.

Whee.

src/conio/ansi_cio.c

@@ -1003,6 +1003,7 @@ int ansi_initio_cb(void)
 			if (slen > -1)
 				ansi_writestr_cb(seq, slen);
 		}
+		WriteConsoleA(h, "\x1b[3 q", 5, NULL, NULL);
 	}
 	atexit(ansi_fixterm);
 #else

src/conio/win32cio.c

@@ -796,6 +796,7 @@ void win32_textmode(int mode)
 							WriteConsoleA(h, seq, slen, NULL, NULL);
 					}
 					cio_api.options |= CONIO_OPT_PALETTE_SETTING;
+					WriteConsoleA(h, "\x1b[3 q", 5, NULL, NULL);
 				}
 			}
 			SetConsoleMode(h, oldmode);