Update libsnark to our fork.

depends/patches/libsnark/1_fix_Wl_flag.patch

@@ -1,19 +0,0 @@
-commit 728c1ace30f2338b86331f0b83559409198e1f74
-Author: Taylor Hornby <havoc@defuse.ca>
-Date:   Wed Sep 9 16:46:48 2015 -0600
-
-    g++-4.9 requires commas to include the argument to ``rpath`` as a linker flag.
-
-diff --git a/Makefile b/Makefile
-index 5f59388..68e91bb 100644
---- a/Makefile
-+++ b/Makefile
-@@ -18,7 +18,7 @@ DEPSRC = depsrc
- DEPINST = depinst
- 
- CXXFLAGS += -I$(DEPINST)/include -Isrc
--LDFLAGS += -L$(DEPINST)/lib -Wl,-rpath $(DEPINST)/lib
-+LDFLAGS += -L$(DEPINST)/lib -Wl,-rpath,$(DEPINST)/lib
- LDLIBS += -lgmpxx -lgmp -lboost_program_options
- # OpenSSL and its dependencies (needed explicitly for static builds):
- LDLIBS += -lcrypto -ldl -lz

depends/patches/libsnark/2_include_iota_header.patch

@@ -1,31 +0,0 @@
-commit c437365ec98ec77754287594d2d3748901d0d176
-Author: Taylor Hornby <taylor@defuse.ca>
-Date:   Wed May 18 10:49:58 2016 -0600
-
-    Include header required for std::iota.
-
-diff --git a/src/common/data_structures/integer_permutation.cpp b/src/common/data_structures/integer_permutation.cpp
-index f9f9327..378ea7e 100644
---- a/src/common/data_structures/integer_permutation.cpp
-+++ b/src/common/data_structures/integer_permutation.cpp
-@@ -15,6 +15,7 @@
- 
- #include <algorithm>
- #include <cassert>
-+#include <numeric>
- #include <unordered_set>
- 
- namespace libsnark {
-diff --git a/src/common/data_structures/sparse_vector.tcc b/src/common/data_structures/sparse_vector.tcc
-index 26429a5..cfc5d75 100644
---- a/src/common/data_structures/sparse_vector.tcc
-+++ b/src/common/data_structures/sparse_vector.tcc
-@@ -16,6 +16,8 @@
- 
- #include "algebra/scalar_multiplication/multiexp.hpp"
- 
-+#include <numeric>
-+
- namespace libsnark {
- 
- template<typename T>