move wxMGL's wxTimer to src/generic

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@14275 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/gtk1/files.lst

@@ -479,6 +479,7 @@ ALL_HEADERS = \
 		variant.h \
 		vector.h \
 		version.h \
+		volume.h \
 		wave.h \
 		wfstream.h \
 		window.h \
@@ -592,6 +593,7 @@ ALL_HEADERS = \
 		generic/statusbr.h \
 		generic/tabg.h \
 		generic/textdlgg.h \
+		generic/timer.h \
 		generic/treectlg.h \
 		generic/wizard.h \
 		unix/execute.h \