Add top level build script for building packages.

Makefile

 # Copyright (c) 2012 The Native Client Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 #
 # Makefile
 #
 # usage: 'make [package]'
 #
 # This makefile builds all of the Native Client ports listed below
 # in $(ALL_PORTS). Each port has a dependency on its own sentinel
@@ skipping 223 matching lines @@
         @rm $@
 else
 ifdef PRINT_DEPS
 $(ALL_PORTS:%=$(SENT)/%): $(SENT)/%:
         @echo $(notdir $(subst $(SENT)/,,$@))
 else
 $(ALL_PORTS:%=$(SENT)/%): $(SENT)/%:
         @$(START_BUILD)
         python build_tools/naclports.py check -C $*
         if python build_tools/naclports.py enabled -C $*; then \
-        cd $* && NACL_ARCH=$(NACL_ARCH) NACL_GLIBC=$(NACL_GLIBC) ./build.sh; fi
+        cd $* && NACL_ARCH=$(NACL_ARCH) NACL_GLIBC=$(NACL_GLIBC) $(CURDIR)/build_tools/naclports.sh; fi
         mkdir -p $(@D)
         touch $@
 endif
 endif
 
 # packages with dependencies
 $(SENT)/ports/libvorbis: ports/libogg
 $(SENT)/ports/libtheora: ports/libogg
 $(SENT)/ports/flac: ports/libogg
 $(SENT)/ports/speex: ports/libogg
@@ skipping 163 matching lines @@
 ruby_ppapi: ports/ruby_ppapi ;
 scummvm: ports/scummvm ;
 snes9x: ports/snes9x ;
 texlive: ports/texlive ;
 thttpd: ports/thttpd ;
 openssh: ports/openssh ;
 # Deliberate space after vim target to avoid detection
 # as modeline string.
 vim : ports/vim ;
 xaos: ports/xaos ;