make tests green; better output for when megatest execution fails

tests/manyloc/keineschweine/dependencies/genpacket/genpacket_enet.nim

@@ -244,7 +244,7 @@ template forwardPacketT*(typeName: untyped; underlyingType: untyped) {.dirty.} =
     #writeData(s, addr p, sizeof(p))
     buffer.write(underlyingType(ord))
 
-when true:
+when false:
   type
     SomeEnum = enum
       A = 0'i8,

tests/manyloc/keineschweine/dependencies/genpacket/macro_dsl.nim

@@ -50,7 +50,7 @@ macro `?`(a: untyped): untyped =
   result = ($a[1].ident)[0].lit
 ## echo(?F,?a,?t,?t,?y)
 
-when true:
+when false:
   macro foo(x: untyped) =
     result = newNimNode(nnkStmtList)
     result.add(newNimNode(nnkCall).und(!!"echo", "Hello thar".lit))

tests/manyloc/keineschweine/lib/estreams.nim

@@ -106,7 +106,7 @@ proc readChar*(buffer: PBuffer): char {.inline.} = return readInt8(buffer).char
 proc readBool*(buffer: PBuffer): bool {.inline.} = return readInt8(buffer).bool
 
 
-when true:
+when false:
   var b = newBuffer(100)
   var str = "hello there"
   b.write str

tests/manyloc/keineschweine/lib/map_filter.nim

@@ -17,7 +17,7 @@ template unless*(condition: untyped; body: untyped) {.dirty.} =
   if not condition:
     body
 
-when true:
+when false:
   proc dumpSeq[T](x: seq[T]) =
     for index, item in x.pairs:
       echo index, " ", item