Support multi byte characters in module names (#7916)

compiler/cgen.nim

@@ -1099,7 +1099,7 @@ proc getSomeInitName(m: PSym, suffix: string): Rope =
   if {sfSystemModule, sfMainModule} * m.flags == {}:
     result = m.owner.name.s.mangle.rope
     result.add "_"
-  result.add m.name.s
+  result.add m.name.s.mangle
   result.add suffix
 
 proc getInitName(m: PSym): Rope =

tests/misc/åäö.nim

@@ -0,0 +1,8 @@
+discard """
+    action: run
+"""
+
+# Tests that module names can contain multi byte characters
+
+let a = 1
+doAssert åäö.a == 1

tests/testament/tester.nim

@@ -79,7 +79,7 @@ proc nimcacheDir(filename, options: string, target: TTarget): string =
 proc callCompiler(cmdTemplate, filename, options: string,
                   target: TTarget, extraOptions=""): TSpec =
   let nimcache = nimcacheDir(filename, options, target)
-  let options = options & " --nimCache:" & nimcache.quoteShell & extraOptions
+  let options = options & " " & ("--nimCache:" & nimcache).quoteShell & extraOptions
   let c = parseCmdLine(cmdTemplate % ["target", targetToCmd[target],
                        "options", options, "file", filename.quoteShell,
                        "filedir", filename.getFileDir()])