don't include unnecessary headers in the distribution

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@9843 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

distrib/msw/tmake/gtk.t

@@ -67,6 +67,8 @@
     
     #! find all our headers
     foreach $file (sort keys %wxWXINCLUDE) {
+        next if $wxWXINCLUDE{$file} =~ /\bR\b/;
+
         $project{"GTK_HEADERS"} .= $file . " "
     }
 

distrib/msw/tmake/motif.t

@@ -67,6 +67,8 @@
     }
     #! find all our headers
     foreach $file (sort keys %wxWXINCLUDE) {
+        next if $wxWXINCLUDE{$file} =~ /\bX\b/;
+
         $project{"MOTIF_HEADERS"} .= $file . " "
     }
 

distrib/msw/tmake/os2.t

@@ -58,6 +58,8 @@
     }
     #! find all our headers
     foreach $file (sort keys %wxWXINCLUDE) {
+        next if $wxWXINCLUDE{$file} =~ /\bP\b/;
+
         $project{"OS2PM_HEADERS"} .= $file . " "
     }