process.c: move uname parser to a separate file

* uname.c: New file.
* Makefile.am (strace_SOURCES): Add it.
* process.c (sys_uname): Move to uname.c.
diff --git a/uname.c b/uname.c
new file mode 100644
index 0000000..d1b195e
--- /dev/null
+++ b/uname.c
@@ -0,0 +1,31 @@
+#include "defs.h"
+
+#include <sys/utsname.h>
+
+int
+sys_uname(struct tcb *tcp)
+{
+	struct utsname uname;
+
+	if (exiting(tcp)) {
+		if (syserror(tcp) || !verbose(tcp))
+			tprintf("%#lx", tcp->u_arg[0]);
+		else if (umove(tcp, tcp->u_arg[0], &uname) < 0)
+			tprints("{...}");
+		else if (!abbrev(tcp)) {
+			tprintf("{sysname=\"%s\", nodename=\"%s\", ",
+				uname.sysname, uname.nodename);
+			tprintf("release=\"%s\", version=\"%s\", ",
+				uname.release, uname.version);
+			tprintf("machine=\"%s\"", uname.machine);
+#ifdef HAVE_STRUCT_UTSNAME_DOMAINNAME
+			tprintf(", domainname=\"%s\"", uname.domainname);
+#endif
+			tprints("}");
+		}
+		else
+			tprintf("{sys=\"%s\", node=\"%s\", ...}",
+				uname.sysname, uname.nodename);
+	}
+	return 0;
+}