syslinux: upgrade to versin 3.86

from version 3.36
partly based on the recipe from openembedded project

changes:
  - add cross-build.patch to use poky toolchain
  - mangle LDFLAGS so $LD invocation works
  - use precompiled version of $BTARGET for target (OE)
  - stick on ${sbindir} instead of OE's ${base_sbindir}

Signed-off-by: Qing He <qing.he@intel.com>

meta/packages/syslinux/files/cross-build.patch

@@ -0,0 +1,58 @@
+Use ?= for Makefile variables to use poky environment variables.
+Original method to sed s/CC =/CC ?=/ is not applicable anymore
+because of the Makefile changes.
+
+against 3.86
+
+06/28/2010 - qhe
+---
+diff --git a/MCONFIG b/MCONFIG
+index e9c16d3..4d49f33 100644
+--- a/MCONFIG
++++ b/MCONFIG
+@@ -18,13 +18,13 @@
+ MAKEFLAGS += -r
+ MAKE      += -r
+ 
+-BINDIR   = /usr/bin
+-SBINDIR  = /sbin
+-LIBDIR   = /usr/lib
+-DATADIR  = /usr/share
++BINDIR   ?= /usr/bin
++SBINDIR  ?= /sbin
++LIBDIR   ?= /usr/lib
++DATADIR  ?= /usr/share
+ AUXDIR   = $(DATADIR)/syslinux
+-MANDIR	 = /usr/man
+-INCDIR   = /usr/include
++MANDIR	 ?= /usr/man
++INCDIR   ?= /usr/include
+ TFTPBOOT = /tftpboot
+ COM32DIR = $(AUXDIR)/com32
+ 
+@@ -38,18 +38,18 @@ PERL	 = perl
+ 
+ CHMOD	 = chmod
+ 
+-CC	 = gcc
++CC	 ?= gcc
+ gcc_ok   = $(shell tmpf=gcc_ok.$$$$.tmp; \
+ 		   if $(CC) $(1) -c $(topdir)/dummy.c -o $$tmpf 2>/dev/null ; \
+ 		   then echo '$(1)'; else echo '$(2)'; fi; \
+ 		   rm -f $$tmpf)
+ 
+-LD	 = ld
+-OBJDUMP	 = objdump
+-OBJCOPY  = objcopy
+-AR       = ar
+-NM       = nm
+-RANLIB   = ranlib
++LD	 ?= ld
++OBJDUMP	 ?= objdump
++OBJCOPY  ?= objcopy
++AR       ?= ar
++NM       ?= nm
++RANLIB   ?= ranlib
+ GZIPPROG = gzip
+ PNGTOPNM = pngtopnm
+ MCOPY    = mcopy