Add startfiles and install_startfiles targets to the top-level Makefile, as
in uClibc 0.9.32 and later.

Signed-off-by: Simon Dawson <spdawson@gmail.com>

diff -Nurp a/Makefile.help b/Makefile.help
--- a/Makefile.help	2011-06-08 19:58:40.000000000 +0100
+++ b/Makefile.help	2013-08-10 21:17:46.572104259 +0100
@@ -14,6 +14,7 @@ help:
 	@echo 'Build:'
 	@echo '  all			- libraries and generated headers'
 	@echo '  pregen		- generate headers'
+	@echo '  startfiles		- build startfiles (crt)'
 	@echo '  utils			- build target utilities'
 	@echo '			  (ldd, ldconfig, locale, iconv)'
 	@echo '  hostutils		- build host utilities (see utils)'
@@ -32,6 +33,7 @@ help:
 	@echo '  install		- install both the runtime and the headers'
 	@echo '  install_runtime	- install the libraries'
 	@echo '  install_dev		- install all headers and static libs'
+	@echo '  install_startfiles	- install startfiles (crt)'
 	@echo '  install_headers	- install headers excluding generated ones'
 	@echo '  install_utils		- install target utilities'
 	@echo '  install_hostutils	- install host utilities'
diff -Nurp a/Makefile.in b/Makefile.in
--- a/Makefile.in	2011-06-08 19:58:40.000000000 +0100
+++ b/Makefile.in	2013-08-10 21:10:55.248649101 +0100
@@ -193,6 +193,8 @@ install: install_runtime install_dev
 
 RUNTIME_PREFIX_LIB_FROM_DEVEL_PREFIX_LIB=$(shell $(top_srcdir)extra/scripts/relative_path.sh $(DEVEL_PREFIX)$(MULTILIB_DIR) $(RUNTIME_PREFIX)$(MULTILIB_DIR))
 
+startfiles: $(crt-y)
+
 $(top_builddir)extra/scripts/unifdef: |$(top_builddir)extra/scripts
 $(top_builddir)extra/scripts/unifdef: $(top_srcdir)extra/scripts/unifdef.c
 	$(hcompile.u)
@@ -301,6 +303,10 @@ else
 	cd $(PREFIX)$(DEVEL_PREFIX)include && $(RM) -f wchar-stub.h
 endif
 
+# Installs startfiles
+install_startfiles: startfiles | $(PREFIX)$(DEVEL_PREFIX)$(MULTILIB_DIR)
+	-$(INSTALL) -m 644 $(startfiles) $(PREFIX)$(DEVEL_PREFIX)$(MULTILIB_DIR)/
+
 # Installs development library links.
 install_dev: install_headers install_runtime | $(PREFIX)$(DEVEL_PREFIX)$(MULTILIB_DIR)
 	-$(INSTALL) -m 644 $(top_builddir)lib/*.[ao] $(PREFIX)$(DEVEL_PREFIX)$(MULTILIB_DIR)/
diff -Nurp a/Makerules b/Makerules
--- a/Makerules	2011-06-08 19:58:40.000000000 +0100
+++ b/Makerules	2013-08-10 21:24:21.287583111 +0100
@@ -406,7 +406,8 @@ endif
 CRTS_COMPAT :=
 #endif
 
-$(crt-y): $(CRTS) $(CTOR_TARGETS) $(CRTS_COMPAT) $(CRTRELOC)
+startfiles = $(CRTS) $(CTOR_TARGETS) $(CRTS_COMPAT) $(CRTRELOC)
+$(crt-y): $(startfiles)
 $(CRTS) $(CTOR_TARGETS) $(CRTS_COMPAT) $(CRTRELOC): | headers
 
 $(top_builddir)lib/$(NONSHARED_LIBNAME): $(libc-nonshared-y)