Clean up tests/stdlib

2 tests still fail:
- tircbot would need a benign pragma because of the locks
- tgetfileinfo uses os.getFileInfo() on nil, which segfaults instead of
  throwing an exception as the tester expects

tests/stdlib/tgetfileinfo.nim

@@ -32,7 +32,7 @@ proc caseOneAndTwo(followLink: bool) =
   try:
     discard getFileInfo(getAppFilename(), followLink)
     #echo("String : Existing File : Symlink $# : Success" % $followLink)
-  except EOS:
+  except OSError:
     echo("String : Existing File : Symlink $# : Failure" % $followLink)
 
 proc caseThreeAndFour(followLink: bool) =
@@ -40,7 +40,8 @@ proc caseThreeAndFour(followLink: bool) =
   try:
     discard getFileInfo(invalidName, true)
     echo("String : Non-existing File : Symlink $# : Failure" % $followLink)
-  except EOS:
+  except OSError:
+    discard
     #echo("String : Non-existing File : Symlink $# : Success" % $followLink)
 
 proc testGetFileInfo =
@@ -82,12 +83,14 @@ proc testGetFileInfo =
       discard getFileInfo(testFile)
       echo("Handle : Invalid File : Failure")
     except EIO, EOS:
+      discard
       #echo("Handle : Invalid File : Success")
 
     try:
       discard getFileInfo(testHandle)
       echo("Handle : Invalid File : Failure")
     except EIO, EOS:
+      discard
       #echo("Handle : Invalid File : Success")
 
-testGetFileInfo()
+testGetFileInfo()