Arch-abstraction:
- create coregrind/x86-linux/ directory.
- move vg_unistd.h into x86-linux/, because it's platform-dependent.  Also
  rename it as vki_unistd.h to make clear it's a kernel interface thing.


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@2681 a5019735-40e9-0310-863c-91ae7b9d1cf9
diff --git a/Makefile.core-AM_CPPFLAGS.am b/Makefile.core-AM_CPPFLAGS.am
index ff66007..2e889b4 100644
--- a/Makefile.core-AM_CPPFLAGS.am
+++ b/Makefile.core-AM_CPPFLAGS.am
@@ -1,5 +1,6 @@
 add_includes = -I$(top_builddir)/coregrind -I$(top_srcdir)/coregrind \
 		-I$(top_srcdir)/coregrind/$(VG_ARCH) \
+		-I$(top_srcdir)/coregrind/$(VG_PLATFORM) \
 		-I$(top_builddir)/include -I$(top_srcdir)/include \
 		-I$(top_srcdir)/include/$(VG_ARCH)