Move the extension-less sample scripts in a filenames/ subdir

samples/Tcl/filenames/starfield

@@ -0,0 +1,28 @@
+#!/usr/bin/env wish
+# http://wiki.tcl.tk/14140
+
+proc stars'go {c factor} {
+    set w [winfo width $c]
+    set h [winfo height $c] 
+    $c scale all [expr {$w/2}] [expr {$h/2}] $factor $factor 
+    foreach item [$c find all] {
+        if {[llength [$c bbox $item]] == 0} {$c delete $item; continue} ;# (1)
+        foreach {x0 y0 x1 y1} [$c bbox $item] break
+        if {$x1<0 || $x0>$w || $y1<0 || $y0>$h} {$c delete $item}
+    }
+    time {
+        set x [expr {rand()*$w}]
+        set y [expr {rand()*$h}]
+        set col [lpick {white yellow beige bisque cyan}]
+        $c create oval $x $y [expr {$x+1}] [expr {$y+1}] -fill $col \
+                -outline $col
+    } 10
+    after $::ms [info level 0]
+}
+proc lpick list {lindex $list [expr {int(rand()*[llength $list])}]}
+#-- Let's go!
+pack [canvas .c -bg black] -fill both -expand 1
+set ms 40
+bind . <Up> {incr ms -5}
+bind . <Down> {incr ms 5}
+stars'go .c 1.05