rename std/threads to std/typedthreads (#20850)

* rename `std/threads` to `std/oldthreads`

* fixes tests

* rename to `typedthreads`

* changelog

tests/stdlib/tenvvars.nim

@@ -10,7 +10,7 @@ import stdtest/testutils
 import std/[assertions]
 
 when not defined(js):
-  import std/threads
+  import std/typedthreads
 
 # "LATIN CAPITAL LETTER AE" in UTF-8 (0xc386)
 const unicodeUtf8 = "\xc3\x86"

tests/stdlib/tnetdial.nim

@@ -5,7 +5,7 @@ discard """
 """
 
 import os, net, nativesockets, asyncdispatch
-import std/[assertions, threads]
+import std/[assertions, typedthreads]
 
 ## Test for net.dial
 

tests/stdlib/tosenv.nim

@@ -58,7 +58,7 @@ proc c_getenv(env: cstring): cstring {.importc: "getenv", header: "<stdlib.h>".}
 
 when not defined(js) and not defined(nimscript):
   when defined(nimPreviewSlimSystem):
-    import std/threads
+    import std/typedthreads
   block: # bug #18533
     var thr: Thread[void]
     proc threadFunc {.thread.} = putEnv("foo", "fooVal2")

tests/stdlib/tssl.nim

@@ -4,7 +4,7 @@ discard """
   disabled: "openbsd"
 """
 # disabled: pending bug #15713
-import std/[net, nativesockets, assertions, threads]
+import std/[net, nativesockets, assertions, typedthreads]
 
 when defined(posix): import os, posix
 else: