Prevent 'permission denied' errors during build as non-root user
because of attempts to chown files to root.
These install targets are run during the build, before 'make fake'.
--- libgcc/Makefile.in.orig	Fri Apr 10 01:23:07 2009
+++ libgcc/Makefile.in	Mon Jan  6 16:24:11 2014
@@ -99,7 +99,7 @@ all: all-multi
 	# them back to the GCC directory.  Too many things (other
 	# in-tree libraries, and DejaGNU) know about the layout
 	# of the build tree, for now.
-	$(MAKE) install-leaf DESTDIR=$(gcc_objdir) \
+	$(MAKE) install-leaf INSTALL_DATA=cp DESTDIR=$(gcc_objdir) \
 	  slibdir= libsubdir= MULTIOSDIR=$(MULTIDIR)
 
 .PHONY: all-multi
@@ -857,7 +857,7 @@ endif
 	parts="$(EXTRA_PARTS)";					\
 	for file in $$parts; do					\
 	  rm -f $(gcc_objdir)$(MULTISUBDIR)/$$file;		\
-	  $(INSTALL_DATA) $$file $(gcc_objdir)$(MULTISUBDIR)/;	\
+	  cp $$file $(gcc_objdir)$(MULTISUBDIR)/;		\
 	done
 
 # Build extra startfiles in the gcc directory, for unconverted
@@ -890,7 +890,7 @@ gcc-extra-parts:
 	parts="$(GCC_EXTRA_PARTS)";				\
 	for file in $$parts; do					\
 	  rm -f $(gcc_objdir)$(MULTISUBDIR)/$$file;		\
-	  $(INSTALL_DATA) $$file $(gcc_objdir)$(MULTISUBDIR)/;	\
+	  cp $$file $(gcc_objdir)$(MULTISUBDIR)/;		\
 	done
 
 all: $(extra-parts)