[tools/mklibs] add missing includes ('unistd.h') for mklibs

This is needed when compiling with GCC >= 4.7.0 since it doesn't implicitly include 'unistd.h' anymore (needed e.g. for file operations in this particular case)

 - Thanks to Luka Perkov

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@31259 3c298f89-4303-0410-b956-a3cf2f4a3e73

tools/mklibs/patches/001-missing_includes.patch

@@ -0,0 +1,20 @@
+--- a/src/mklibs-readelf/elf.cpp
++++ b/src/mklibs-readelf/elf.cpp
+@@ -25,6 +25,7 @@
+ #include <fcntl.h>
+ #include <sys/mman.h>
+ #include <sys/stat.h>
++#include <unistd.h>
+ 
+ using namespace Elf;
+ 
+--- a/src/mklibs-readelf/main.cpp
++++ b/src/mklibs-readelf/main.cpp
+@@ -7,6 +7,7 @@
+ 
+ #include <elf.h>
+ #include <getopt.h>
++#include <stdio.h>
+ 
+ #include "elf.hpp"
+ 

tools/mklibs/patches/001-missing_stdio.patch

@@ -1,10 +0,0 @@
---- a/src/mklibs-readelf/main.cpp
-+++ b/src/mklibs-readelf/main.cpp
-@@ -7,6 +7,7 @@
- 
- #include <elf.h>
- #include <getopt.h>
-+#include <stdio.h>
- 
- #include "elf.hpp"
-