	On Windows fseek() etc. are meaningful only for binary access.

	Mail from Akira, 29 Mar 2012 23:50:53.

diff -ur pmx-2.6.18.orig/libf2c/open.c pmx-2.6.18/libf2c/open.c
--- pmx-2.6.18.orig/libf2c/open.c	2012-04-09 18:24:12.000000000 +0200
+++ pmx-2.6.18/libf2c/open.c	2012-05-19 18:46:29.225582726 +0200
@@ -30,6 +30,9 @@
 #ifdef NON_ANSI_RW_MODES
 char *f__r_mode[2] = {"r", "r"};
 char *f__w_mode[4] = {"w", "w", "r+w", "r+w"};
+#elif defined(WIN32)
+char *f__r_mode[2] = {"rb", "rb"};
+char *f__w_mode[4] = {"wb", "wb", "rb+", "rb+"};
 #else
 char *f__r_mode[2] = {"rb", "r"};
 char *f__w_mode[4] = {"wb", "w", "r+b", "r+"};
