patch 9.0.0287: Irix systems no longer exist
Problem: Irix systems no longer exist.
Solution: Remove references to Irix. (Yegappan Lakshmanan, closes #10994)
diff --git a/src/os_unix.c b/src/os_unix.c
index 7aa3d1f..4dadac3 100644
--- a/src/os_unix.c
+++ b/src/os_unix.c
@@ -252,7 +252,7 @@
/*
* I have seen
* extern char *_sys_siglist[NSIG];
- * on Irix, Linux, NetBSD and Solaris. It contains a nice list of strings
+ * on Linux, NetBSD and Solaris. It contains a nice list of strings
* that describe the signals. That is nearly what we want here. But
* autoconf does only check for sys_siglist (without the underscore), I
* do not want to change everything today.... jw.