added "s390 Linux" as a platform that curl was compiled for, and I also sorted

the list of machines

docs/INSTALL

@@ -372,8 +372,6 @@ PORTS
    This is a probably incomplete list of known hardware and operating systems
    that curl has been compiled for:
 
-        - Ultrix 4.3a
-        - SINIX-Z v5
         - Alpha DEC OSF 4
         - Alpha Digital UNIX v3.2
         - Alpha FreeBSD 4.1
@@ -386,9 +384,14 @@ PORTS
         - PowerPC Darwin 1.0
         - PowerPC Linux
         - PowerPC Mac OS X
+        - SINIX-Z v5
         - Sparc Linux
         - Sparc Solaris 2.4, 2.5, 2.5.1, 2.6, 7, 8
         - Sparc SunOS 4.1.X
+        - StrongARM (and other ARM) RISC OS 3.1, 4.02
+        - StrongARM Linux 2.4
+        - StrongARM NetBSD 1.4.1
+        - Ultrix 4.3a
         - i386 BeOS
         - i386 FreeBSD
         - i386 Linux 1.3, 2.0, 2.2, 2.3, 2.4
@@ -401,9 +404,7 @@ PORTS
         - ia64 Linux 2.3.99
         - m68k AmigaOS 3
         - m68k OpenBSD
-        - StrongARM Linux 2.4
-        - StrongARM NetBSD 1.4.1
-        - StrongARM (and other ARM) RISC OS 3.1, 4.02
+        - s390 Linux 
 
 OpenSSL
 =======