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diff --git a/Build/source/texk/gregorio/gregorio-4.0.0-beta2/src/sha1.h b/Build/source/texk/gregorio/gregorio-4.0.0-beta2/src/sha1.h
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+/*
+ * Declarations of functions and data types used for SHA1 sum
+ * library functions.
+ *
+ * Copyright (C) 2015 The Gregorio Project (see CONTRIBUTORS.md)
+ * Copyright (C) 2000-2001, 2003, 2005-2006, 2008-2014 Free Software
+ * Foundation, Inc.
+ *
+ * This file is part of Gregorio.
+ * This file has been adapted from GNU coreutils to fit Gregorio.
+ *
+ * Gregorio is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Gregorio is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Gregorio. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef SHA1_H
+#define SHA1_H 1
+
+#include <stddef.h>
+#ifdef HAVE_STDINT_H
+#include <stdint.h>
+#else
+#include <inttypes.h>
+#endif
+
+#define SHA1_DIGEST_SIZE 20
+
+/* Structure to save state of computation between the single steps. */
+struct sha1_ctx {
+ uint32_t A;
+ uint32_t B;
+ uint32_t C;
+ uint32_t D;
+ uint32_t E;
+
+ uint32_t total[2];
+ uint32_t buflen;
+ uint32_t buffer[32];
+};
+
+/* Initialize structure containing state of computation. */
+extern void sha1_init_ctx(struct sha1_ctx *ctx);
+
+/* Starting with the result of former calls of this function (or the
+ initialization function update the context for the next LEN bytes
+ starting at BUFFER.
+ It is necessary that LEN is a multiple of 64!!! */
+extern void sha1_process_block(const void *buffer, size_t len,
+ struct sha1_ctx *ctx);
+
+/* Starting with the result of former calls of this function (or the
+ initialization function update the context for the next LEN bytes
+ starting at BUFFER.
+ It is NOT required that LEN is a multiple of 64. */
+extern void sha1_process_bytes(const void *buffer, size_t len,
+ struct sha1_ctx *ctx);
+
+/* Process the remaining bytes in the buffer and put result from CTX
+ in first 20 bytes following RESBUF. The result is always in little
+ endian byte order, so that a byte-wise output yields to the wanted
+ ASCII representation of the message digest. */
+extern void *sha1_finish_ctx(struct sha1_ctx *ctx, void *resbuf);
+
+/* Put result from CTX in first 20 bytes following RESBUF. The result is
+ always in little endian byte order, so that a byte-wise output yields
+ to the wanted ASCII representation of the message digest. */
+extern void *sha1_read_ctx(const struct sha1_ctx *ctx, void *resbuf);
+
+/* Compute SHA1 message digest for LEN bytes beginning at BUFFER. The
+ result is always in little endian byte order, so that a byte-wise
+ output yields to the wanted ASCII representation of the message
+ digest. */
+extern void *sha1_buffer(const char *buffer, size_t len, void *resblock);
+
+#endif