tcl: fixed to install private headers (see note)

Note:

tk (and most probably other tcl/tk applications) won't build without installing
private headers.

base/tcl/tcl.conf

@@ -2,6 +2,7 @@
 # This copyright note is auto-generated by ./scripts/Create-CopyPatch.
 #
 # Filename: package/.../tcl/tcl.conf
+# Copyright (C) 2011 The OpenSDE Project
 # Copyright (C) 2004 - 2006 The T2 SDE Project
 # Copyright (C) 1998 - 2003 Clifford Wolf
 #
@@ -17,8 +18,10 @@ ptcl () {
     mm=`echo $ver | cut -d . -f 1-2`
     ln -vsf $bindir/tclsh$mm $root/$bindir/tclsh
     ln -vsf $libdir/libtcl$mm.so $root/$libdir/libtcl.so
-    install -m 644 ../generic/tcl{Math,Int,IntDecls}.h $includedir
 }
 
 hook_add preconf 3 "cd unix"
 hook_add postmake 5 ptcl
+
+# tk won't build without installing private headers
+var_append makeinstopt ' ' "install-private-headers"