lang/gcc6-aux: Upgrade version 20160306 => 20160313

The real addition is to complete support for the gnatdroid cross
compilers.  Rather than to revbump, let's just update to the latest
snapshot instead.

lang/gcc6-aux/Makefile.version

@@ -3,7 +3,7 @@
 GCC_BRANCH=		6
 GCC_POINT=		0.0
 GCC_VERSION=		${GCC_BRANCH}.${GCC_POINT}
-SNAPSHOT=		20160306
+SNAPSHOT=		20160313
 BUILD_RELEASE=		no
 MAIN_PR=		0
 UTIL_PR=		0

lang/gcc6-aux/distinfo

@@ -1,5 +1,5 @@
-SHA256 (gcc-6-20160306.tar.bz2) = fec1c83edcaa3e51a92b76af8e1f91b683304172a9abd7b08379f1213cc58b6a
-SIZE (gcc-6-20160306.tar.bz2) = 95156434
+SHA256 (gcc-6-20160313.tar.bz2) = 7c65d90063b6cce4aaceca85d9cd132ba12a78093d83384ed0b6c3af41e5abf8
+SIZE (gcc-6-20160313.tar.bz2) = 95177302
 SHA256 (ada-bootstrap.i386.freebsd.100B.tar.bz2) = 7231209f2600275f554f788ad1d036cf633c4339ebd25bd479a5bb1ddcddedf3
 SIZE (ada-bootstrap.i386.freebsd.100B.tar.bz2) = 41229192
 SHA256 (ada-bootstrap.x86_64.dragonfly.41.tar.bz2) = eb7785d8b842aee2bb04b43adfb1346b178ee4e83d8775b4e6705fd23f1586f0

lang/gcc6-aux/files/diff-cxx

@@ -10,3 +10,54 @@
    linux-musl*)
      os_include_dir="os/generic"
      ;;
+--- libstdc++-v3/config/os/bionic/ctype_base.h.orig
++++ libstdc++-v3/config/os/bionic/ctype_base.h
+@@ -38,6 +38,18 @@
+     // Non-standard typedefs.
+     typedef const int* 		__to_type;
+ 
++#ifdef _CTYPE_U
++#define _U _CTYPE_U
++#define _L _CTYPE_L
++#define _D _CTYPE_D
++#define _S _CTYPE_S
++#define _P _CTYPE_P
++#define _C _CTYPE_C
++#define _X _CTYPE_X
++#define _B _CTYPE_B
++#define _N _CTYPE_D
++#endif
++
+     // NB: Offsets into ctype<char>::_M_table force a particular size
+     // on the mask type. Because of this, we don't use an enum.
+     typedef char 		mask;
+--- libstdc++-v3/src/c++11/futex.cc.orig
++++ libstdc++-v3/src/c++11/futex.cc
+@@ -27,7 +27,11 @@
+ #if defined(_GLIBCXX_HAVE_LINUX_FUTEX) && ATOMIC_INT_LOCK_FREE > 1
+ #include <chrono>
+ #include <climits>
++#ifdef __ANDROID__
++#include <sys/syscall.h>
++#else
+ #include <syscall.h>
++#endif
+ #include <unistd.h>
+ #include <sys/time.h>
+ #include <errno.h>
+--- libstdc++-v3/src/filesystem/dir.cc.orig
++++ libstdc++-v3/src/filesystem/dir.cc
+@@ -147,7 +147,13 @@
+ 
+   int err = std::exchange(errno, 0);
+   const auto entp = readdir(dirp);
++#ifdef __ANDROID__
++  int tmperr = errno;
++  errno = err;
++  err = tmperr;
++#else
+   std::swap(errno, err);
++#endif
+ 
+   if (entp)
+     {