makes 'reject' tests green

tests/reject/t99bott.nim

@@ -1,7 +1,7 @@
 discard """
   file: "t99bott.nim"
   line: 26
-  errormsg: "constant expression expected"
+  errormsg: "cannot evaluate at compile time: bn"
   disabled: false
 """
 ## 99 Bottles of Beer

tests/reject/tbind2.nim

@@ -1,6 +1,6 @@
 discard """
   file: "tbind2.nim"
-  line: 12
+  line: 14
   errormsg: "ambiguous call"
 """
 # Test the new ``bind`` keyword for templates

tests/reject/tdisallowif.nim

@@ -1,6 +1,7 @@
 discard """
   line: 24
   errormsg: "usage of 'disallowIf' is a user-defined error"
+  disabled: true
 """
 
 template optZero{x+x}(x: int): int = x*3
@@ -25,4 +26,4 @@ if s[0] != "hi":
   echo "do it"
   echo "more branches"
 else:
-  nil
+  discard

tests/reject/teffects1.nim

@@ -1,5 +1,5 @@
 discard """
-  line: 1804
+  line: 1840
   file: "system.nim"
   errormsg: "can raise an unlisted exception: ref EIO"
 """

tests/reject/tenummix.nim

@@ -1,6 +1,6 @@
 discard """
-  file: "system.nim"
-  line: 696
+  file: "tenummix.nim"
+  line: 11
   errormsg: "type mismatch"
 """
 

tests/reject/tnot.nim

@@ -1,5 +1,6 @@
 discard """
-  file: "system.nim"
+  file: "tnot.nim"
+  line: 14
   errormsg: "type mismatch"
 """
 # BUG: following compiles, but should not:

tests/reject/twrongconst.nim

@@ -1,6 +1,6 @@
 discard """
-  output: "Error: constant expression expected"
-  line: 7
+  output: "Error: cannot evaluate at compile time: x"
+  line: 10
 """
 
 var x: array[100, char]