disable wrong pathes to /usr, fix cross-compile

--- w-openjdk-6-1.orig/openjdk-6/jdk/make/sun/awt/Makefile	2011-02-28 17:06:11.000000000 +0100
+++ w-openjdk-6-1/openjdk-6/jdk/make/sun/awt/Makefile	2011-08-07 17:00:37.676468717 +0200
@@ -509,10 +509,7 @@
 #
 
 ifeq ($(PLATFORM), linux)
-CPPFLAGS += -I$(MOTIF_DIR)/include \
-            -I$(OPENWIN_HOME)/include \
-            -I$(OPENWIN_HOME)/include/X11/extensions \
-            -I$(PLATFORM_SRC)/native/$(PKGDIR)/font 
+CPPFLAGS += -I$(PLATFORM_SRC)/native/$(PKGDIR)/font 
 endif
 CPPFLAGS += -I$(SHARE_SRC)/native/$(PKGDIR)/debug \
             -I$(SHARE_SRC)/native/$(PKGDIR)/../font \
@@ -535,10 +532,6 @@
             -I$(PLATFORM_SRC)/native/$(PKGDIR) \
 	    $(EVENT_MODEL)
 
-ifeq ($(PLATFORM), linux)
-LDFLAGS += -L$(MOTIF_LIB) -L$(OPENWIN_LIB)
-endif
-
 LDFLAGS += -L$(LIBDIR)/$(LIBARCH)/$(TSOBJDIR) \
 	   $(AWT_RUNPATH)
 
--- w-openjdk-6-1.orig/openjdk-6/jdk/make/sun/xawt/Makefile	2011-02-28 17:06:12.000000000 +0100
+++ w-openjdk-6-1/openjdk-6/jdk/make/sun/xawt/Makefile	2011-08-07 18:31:08.635355054 +0200
@@ -96,6 +96,10 @@
 
 CPPFLAGS += -I$(CUPS_HEADERS_PATH)
 
+ifeq ($(PLATFORM), linux)
+CPPFLAGS += -I@ADK_TARGETDIR@/usr/include/X11/extensions
+endif
+
 CPPFLAGS += -DXAWT -DXAWT_HACK \
         -I$(TEMPDIR)/../../sun.awt/awt/CClassHeaders \
         -I$(PLATFORM_SRC)/native/sun/awt \
@@ -122,14 +126,6 @@
         -I$(SHARE_SRC)/native/sun/awt \
         -I$(PLATFORM_SRC)/native/sun/awt 
 
-ifeq ($(PLATFORM), linux)
-# Allows for builds on Debian GNU Linux, X11 is in a different place 
-  CPPFLAGS += -I/usr/X11R6/include/X11/extensions \
-              -I/usr/include/X11/extensions \
-              -I$(MOTIF_DIR)/include \
-              -I$(OPENWIN_HOME)/include 
-endif
-
 ifeq ($(PLATFORM), solaris)
   CPPFLAGS += -I$(OPENWIN_HOME)/include/X11/extensions -I$(MOTIF_DIR)/include 
 endif