made some tests green

lib/system/sysio.nim

@@ -46,8 +46,8 @@ proc write(f: TFile, c: cstring) = fputs(c, f)
 {.pop.}
 
 var
-  IOFBF {.importc: "_IOFBF", header: "<stdio.h>".}: cint
-  IONBF {.importc: "_IONBF", header: "<stdio.h>".}: cint
+  IOFBF {.importc: "_IOFBF", nodecl.}: cint
+  IONBF {.importc: "_IONBF", nodecl.}: cint
 
 const
   buf_size = 4000

tests/reject/teffects1.nim

@@ -1,6 +1,6 @@
 discard """
-  line: 51
-  file: "sysio.nim"
+  line: 1804
+  file: "system.nim"
   errormsg: "can raise an unlisted exception: ref EIO"
 """
 

tests/run/tsubrange.nim

@@ -1,6 +1,6 @@
 discard """
   file: "tsubrange.nim"
-  outputsub: "value 50 out of range [EOutOfRange]"
+  outputsub: "value out of range: 50 [EOutOfRange]"
   exitcode: "1"
 """
 

tests/run/tsubrange2.nim

@@ -1,6 +1,6 @@
 discard """
   file: "tsubrange2.nim"
-  outputsub: "value 50 out of range [EOutOfRange]"
+  outputsub: "value out of range: 50 [EOutOfRange]"
   exitcode: "1"
 """