Added additional pipe() tests ported by Paul Larson.
diff --git a/runtest/syscalls b/runtest/syscalls
index ee51ee7..bf18756 100644
--- a/runtest/syscalls
+++ b/runtest/syscalls
@@ -474,8 +474,12 @@
 personality02 personality02
 
 pipe01 pipe01
+pipe02 pipe02
+pipe03 pipe03
+pipe04 pipe04
 pipe05 pipe05
 pipe06 pipe06
+pipe07 pipe07
 pipe08 pipe08
 pipe09 pipe09
 pipe10 pipe10