build luajit with -Wl,-E to avoid problems when dlopen()ing hit by tedu.

tracked down by jturner, I tweaked his diff to use more of upstream's
original src/Makefile. ok jasper@ jturner@ abieber@

lang/luajit/Makefile

@@ -1,4 +1,4 @@
-# $OpenBSD: Makefile,v 1.10 2013/11/01 12:21:04 jasper Exp $
+# $OpenBSD: Makefile,v 1.11 2014/02/10 17:31:46 sthen Exp $
 
 ONLY_FOR_ARCHS = powerpc i386 amd64
 # arm needs EABI/aapcs
@@ -9,6 +9,7 @@ SHARED_LIBS +=	luajit-${MODLUA_VERSION} 0.0 # 2.0.0
 
 COMMENT =	just-in-time compiler for Lua
 V =		2.0.2
+REVISION =	0
 DISTNAME =	LuaJIT-${V}
 PKGNAME =	${DISTNAME:L}
 

lang/luajit/patches/patch-src_Makefile

@@ -1,27 +1,18 @@
-$OpenBSD: patch-src_Makefile,v 1.2 2013/10/05 15:51:08 abieber Exp $
---- src/Makefile.orig	Mon Jun  3 13:00:00 2013
-+++ src/Makefile	Sat Oct  5 09:33:07 2013
-@@ -304,6 +304,11 @@ ifeq (iOS,$(TARGET_SYS))
+$OpenBSD: patch-src_Makefile,v 1.3 2014/02/10 17:31:46 sthen Exp $
+--- src/Makefile.orig	Mon Jun  3 20:00:00 2013
++++ src/Makefile	Mon Feb 10 17:12:11 2014
+@@ -304,6 +304,10 @@ ifeq (iOS,$(TARGET_SYS))
    TARGET_DYNXLDOPTS=
    TARGET_XSHLDFLAGS+= -install_name $(TARGET_DYLIBPATH) -compatibility_version $(MAJVER).$(MINVER) -current_version $(MAJVER).$(MINVER).$(RELVER)
  else
-+ifeq (OpenBSD,$(TARGET_SYS))
-+  TARGET_XSHLDFLAGS= -shared -fPIC
-+  TARGET_XCFLAGS+= -fno-stack-protector
-+  TARGET_STRIP= @:
-+else
++  ifeq (OpenBSD,$(TARGET_SYS))
++    TARGET_XSHLDFLAGS= -shared -fPIC
++    TARGET_STRIP= @:
++  endif
    ifneq (,$(findstring stack-protector,$(shell $(TARGET_CC) -dumpspecs)))
      TARGET_XCFLAGS+= -fno-stack-protector
    endif
-@@ -321,6 +326,7 @@ else
- endif
- endif
- endif
-+endif
- 
- ifneq ($(HOST_SYS),$(TARGET_SYS))
-   ifeq (Windows,$(TARGET_SYS))
-@@ -550,10 +556,10 @@ endif
+@@ -550,10 +554,10 @@ endif
  endif
  endif