adjust package name (Thread in 2.8 vs. thread in 2.9+)

Author: sebres

tests/thread.test

@@ -39,10 +39,10 @@ test thread-1.11 {no segfault on 2nd interpreter, bug [d4ba38d00d06ebba]} -body
     # any other thread invocation before 2nd interpreter gets the thread::id (TSD),
     # but test-suite calls thread::id command (tcltest, all.tcl and thread.test):
     set fd [open [list |[info nameofexecutable] << [string map [list {$$load} [tcltest::loadScript]] {
-    	$$load; package require thread
+    	$$load; package require Thread
 	interp create ci
 	set l {}
-	ci eval {$$load; package require thread; thread::id}
+	ci eval {$$load; package require Thread; thread::id}
 	thread::send -async [thread::id] {lappend l ev-1}; update
 	interp delete ci
 	thread::send -async [thread::id] {lappend l ev-2}; update; # no SF here
@@ -58,7 +58,7 @@ test thread-1.12 {no events in 2nd interpreter, bug [d4ba38d00d06ebba]} -setup {
 } -body {
     set l {}
     thread::send -async [thread::id] {lappend l ev-1}; update
-    ci eval {package require tcltest; tcltest::loadTestedCommands; package require thread}
+    ci eval {package require tcltest; tcltest::loadTestedCommands; package require Thread}
     thread::send -async [thread::id] {lappend l ev-2}; update
     set l
 } -cleanup {