Update patch files to v0.6

Author: jlest01

secp256k1-sys/depend/scratch.h.patch

@@ -0,0 +1,5 @@
+26,29d25
+< static secp256k1_scratch* secp256k1_scratch_create(const secp256k1_callback* error_callback, size_t max_size);
+< 
+< static void secp256k1_scratch_destroy(const secp256k1_callback* error_callback, secp256k1_scratch* scratch);
+< 

secp256k1-sys/depend/secp256k1.c.patch

@@ -37,14 +37,14 @@
 <     free(ctx);
 < }
 < 
-220,229d183
+223,232d185
 < }
 < 
-< secp256k1_scratch_space* secp256k1_scratch_space_create(const secp256k1_context* ctx, size_t max_size) {
+< static secp256k1_scratch_space* secp256k1_scratch_space_create(const secp256k1_context* ctx, size_t max_size) {
 <     VERIFY_CHECK(ctx != NULL);
 <     return secp256k1_scratch_create(&ctx->error_callback, max_size);
 < }
 < 
-< void secp256k1_scratch_space_destroy(const secp256k1_context *ctx, secp256k1_scratch_space* scratch) {
+< static void secp256k1_scratch_space_destroy(const secp256k1_context *ctx, secp256k1_scratch_space* scratch) {
 <     VERIFY_CHECK(ctx != NULL);
 <     secp256k1_scratch_destroy(&ctx->error_callback, scratch);

secp256k1-sys/depend/secp256k1.h.patch

@@ -18,18 +18,6 @@
 <     secp256k1_context *ctx
 < ) SECP256K1_ARG_NONNULL(1);
 < 
-402,406d386
-< SECP256K1_API SECP256K1_WARN_UNUSED_RESULT secp256k1_scratch_space *secp256k1_scratch_space_create(
-<     const secp256k1_context *ctx,
-<     size_t size
-< ) SECP256K1_ARG_NONNULL(1);
-< 
-413,417d392
-< SECP256K1_API void secp256k1_scratch_space_destroy(
-<     const secp256k1_context *ctx,
-<     secp256k1_scratch_space *scratch
-< ) SECP256K1_ARG_NONNULL(1);
-< 
 636d610
 < SECP256K1_API const secp256k1_nonce_function secp256k1_nonce_function_rfc6979;
 639d612

secp256k1-sys/vendor-libsecp.sh

@@ -96,6 +96,7 @@ echo "$SOURCE_REV" >> ./secp256k1-HEAD-revision.txt
 # To compensate, the secp_context_create and _destroy methods are redefined in Rust.
 patch "$DIR/include/secp256k1.h" "./secp256k1.h.patch"
 patch "$DIR/src/secp256k1.c" "./secp256k1.c.patch"
+patch "$DIR/src/scratch.h" "./scratch.h.patch"
 patch "$DIR/src/scratch_impl.h" "./scratch_impl.h.patch"
 patch "$DIR/src/util.h" "./util.h.patch"