reiserfsprogs: use com_err in reiserfs_open

We dump failure messages to the terminal regardless of whether the caller
wants them or not.  This can be annoying when used as part of a general
tool that tests to see which file system is on a device by calling
its open routine.

Signed-off-by: Jeff Mahoney <jeffm@suse.com>

reiserfscore/reiserfs_err.et

@@ -0,0 +1,27 @@
+# reiserfs_err.et - Error codes for reiserfscore
+#
+# Copyright (C) 2016 SUSE
+#
+	error_table reiserfs
+ec	REISERFS_ET_BREAD_FAILED,
+	"bread failed to read block"
+
+ec	REISERFS_ET_BAD_MAGIC,
+	"the reiserfs superblock cannot be found"
+
+ec	REISERFS_ET_BAD_SUPER,
+	"a superblock with wrong parameters was found in the block"
+
+ec	REISERFS_ET_SMALL_PARTITION,
+	"Your partition is not big enough to contain the filesystem"
+
+ec	REISERFS_ET_NOT_ENOUGH_BLOCKS,
+	"not enough blocks on device"
+
+ec	REISERFS_ET_TOO_SMALL,
+	"cannot create a file system that small"
+
+ec	REISERFS_ET_GETBLK_FAILED,
+	"getblk failed"
+
+	end