Fix libtool path.

--- xpaintrw/Makefile.am.orig	2023-07-13 21:19:11 UTC
+++ xpaintrw/Makefile.am
@@ -28,7 +28,7 @@ xpaint_DEFINES = $(ARCH_DEFINES) $(EXTRA_DEFINES) $(XA
 
 xpaint_DEFINES = $(ARCH_DEFINES) $(EXTRA_DEFINES) $(XAWLIB_DEFINES)
 
-LIBTOOL = /usr/bin/libtool
+LIBTOOL = ${LOCALBASE}/bin/libtool
 AM_CFLAGS   = @X_CFLAGS@ @SPECIAL_CFLAGS@ $(xpaint_DEFINES)
 AM_YFLAGS     = -d
 CLEANFILES    =