add binutils patches fixing mips tls reloc output when linking pie

the linker was wrongly leaving dynamic relocations for GD-model TLS
defined in the main program when linking the main program as PIE. this
was only suboptimal for dynamic pie, but for static pie it resulted in
runtime failure since there is no dynamic linker to resolve the DTPMOD
reference.

this has been reported as binutils bug #22570.

patches/binutils-2.25.1/0008-mips-pie-tls.diff

@@ -0,0 +1,21 @@
+diff -ur binutils-2.25.1.orig/bfd/elfxx-mips.c binutils-2.25.1/bfd/elfxx-mips.c
+--- binutils-2.25.1.orig/bfd/elfxx-mips.c	2018-01-31 11:26:12.000000000 -0500
++++ binutils-2.25.1/bfd/elfxx-mips.c	2018-01-31 12:16:00.179841734 -0500
+@@ -3228,7 +3228,7 @@
+       && (!info->shared || !SYMBOL_REFERENCES_LOCAL (info, h)))
+     indx = h->dynindx;
+
+-  if ((info->shared || indx != 0)
++  if ((!info->executable || indx != 0)
+       && (h == NULL
+ 	  || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
+ 	  || h->root.type != bfd_link_hash_undefweak))
+@@ -3338,7 +3338,7 @@
+   if (entry->tls_initialized)
+     return;
+
+-  if ((info->shared || indx != 0)
++  if ((!info->executable || indx != 0)
+       && (h == NULL
+ 	  || ELF_ST_VISIBILITY (h->root.other) == STV_DEFAULT
+ 	  || h->root.type != bfd_link_hash_undefweak))

patches/binutils-2.27/0004-mips-pie-tls.diff

@@ -0,0 +1,21 @@
+diff -ur binutils-2.27.orig/bfd/elfxx-mips.c binutils-2.27/bfd/elfxx-mips.c
+--- binutils-2.27.orig/bfd/elfxx-mips.c	2016-08-03 03:36:51.000000000 -0400
++++ binutils-2.27/bfd/elfxx-mips.c	2018-01-31 12:11:22.458824584 -0500
+@@ -3242,7 +3242,7 @@
+       && (!bfd_link_pic (info) || !SYMBOL_REFERENCES_LOCAL (info, h)))
+     indx = h->dynindx;
+
+-  if ((bfd_link_pic (info) || indx != 0)
++  if ((bfd_link_dll (info) || indx != 0)
+       && (h == NULL
+ 	  || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
+ 	  || h->root.type != bfd_link_hash_undefweak))
+@@ -3354,7 +3354,7 @@
+   if (entry->tls_initialized)
+     return;
+
+-  if ((bfd_link_pic (info) || indx != 0)
++  if ((bfd_link_dll (info) || indx != 0)
+       && (h == NULL
+ 	  || ELF_ST_VISIBILITY (h->root.other) == STV_DEFAULT
+ 	  || h->root.type != bfd_link_hash_undefweak))