chore(3p/git): Unvendor git and track patches instead r/2903

This was vendored a long time ago under the expectation that keeping
it in sync with cgit would be easier this way, but it has proven not
to be a big issue.

On the other hand, a vendored copy of git is an annoying maintenance
burden. It is much easier to rebase the single (dottime) patch that we
have.

This removes the vendored copy of git and instead passes the git
source code to cgit via `pkgs.srcOnly`, which includes the applied
patch so that cgit can continue rendering dottime.

Change-Id: If31f62dea7ce688fd1b9050204e9378019775f2b

1 files changed, 0 insertions, 134 deletions

diff --git a/third_party/git/ewah/ewah_io.c b/third_party/git/ewah/ewah_io.c
deleted file mode 100644
index 9035ee65ea..0000000000
--- a/third_party/git/ewah/ewah_io.c
+++ /dev/null
@@ -1,134 +0,0 @@
-/**
- * Copyright 2013, GitHub, Inc
- * Copyright 2009-2013, Daniel Lemire, Cliff Moon,
- *	David McIntosh, Robert Becho, Google Inc. and Veronika Zenz
- *
- * This program 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 2
- * of the License, or (at your option) any later version.
- *
- * This program 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 this program; if not, see <http://www.gnu.org/licenses/>.
- */
-#include "git-compat-util.h"
-#include "ewok.h"
-#include "strbuf.h"
-
-int ewah_serialize_to(struct ewah_bitmap *self,
-		      int (*write_fun)(void *, const void *, size_t),
-		      void *data)
-{
-	size_t i;
-	eword_t dump[2048];
-	const size_t words_per_dump = sizeof(dump) / sizeof(eword_t);
-	uint32_t bitsize, word_count, rlw_pos;
-
-	const eword_t *buffer;
-	size_t words_left;
-
-	/* 32 bit -- bit size for the map */
-	bitsize =  htonl((uint32_t)self->bit_size);
-	if (write_fun(data, &bitsize, 4) != 4)
-		return -1;
-
-	/** 32 bit -- number of compressed 64-bit words */
-	word_count =  htonl((uint32_t)self->buffer_size);
-	if (write_fun(data, &word_count, 4) != 4)
-		return -1;
-
-	/** 64 bit x N -- compressed words */
-	buffer = self->buffer;
-	words_left = self->buffer_size;
-
-	while (words_left >= words_per_dump) {
-		for (i = 0; i < words_per_dump; ++i, ++buffer)
-			dump[i] = htonll(*buffer);
-
-		if (write_fun(data, dump, sizeof(dump)) != sizeof(dump))
-			return -1;
-
-		words_left -= words_per_dump;
-	}
-
-	if (words_left) {
-		for (i = 0; i < words_left; ++i, ++buffer)
-			dump[i] = htonll(*buffer);
-
-		if (write_fun(data, dump, words_left * 8) != words_left * 8)
-			return -1;
-	}
-
-	/** 32 bit -- position for the RLW */
-	rlw_pos = (uint8_t*)self->rlw - (uint8_t *)self->buffer;
-	rlw_pos = htonl(rlw_pos / sizeof(eword_t));
-
-	if (write_fun(data, &rlw_pos, 4) != 4)
-		return -1;
-
-	return (3 * 4) + (self->buffer_size * 8);
-}
-
-static int write_strbuf(void *user_data, const void *data, size_t len)
-{
-	struct strbuf *sb = user_data;
-	strbuf_add(sb, data, len);
-	return len;
-}
-
-int ewah_serialize_strbuf(struct ewah_bitmap *self, struct strbuf *sb)
-{
-	return ewah_serialize_to(self, write_strbuf, sb);
-}
-
-ssize_t ewah_read_mmap(struct ewah_bitmap *self, const void *map, size_t len)
-{
-	const uint8_t *ptr = map;
-	size_t data_len;
-	size_t i;
-
-	if (len < sizeof(uint32_t))
-		return error("corrupt ewah bitmap: eof before bit size");
-	self->bit_size = get_be32(ptr);
-	ptr += sizeof(uint32_t);
-	len -= sizeof(uint32_t);
-
-	if (len < sizeof(uint32_t))
-		return error("corrupt ewah bitmap: eof before length");
-	self->buffer_size = self->alloc_size = get_be32(ptr);
-	ptr += sizeof(uint32_t);
-	len -= sizeof(uint32_t);
-
-	REALLOC_ARRAY(self->buffer, self->alloc_size);
-
-	/*
-	 * Copy the raw data for the bitmap as a whole chunk;
-	 * if we're in a little-endian platform, we'll perform
-	 * the endianness conversion in a separate pass to ensure
-	 * we're loading 8-byte aligned words.
-	 */
-	data_len = st_mult(self->buffer_size, sizeof(eword_t));
-	if (len < data_len)
-		return error("corrupt ewah bitmap: eof in data "
-			     "(%"PRIuMAX" bytes short)",
-			     (uintmax_t)(data_len - len));
-	memcpy(self->buffer, ptr, data_len);
-	ptr += data_len;
-	len -= data_len;
-
-	for (i = 0; i < self->buffer_size; ++i)
-		self->buffer[i] = ntohll(self->buffer[i]);
-
-	if (len < sizeof(uint32_t))
-		return error("corrupt ewah bitmap: eof before rlw");
-	self->rlw = self->buffer + get_be32(ptr);
-	ptr += sizeof(uint32_t);
-	len -= sizeof(uint32_t);
-
-	return ptr - (const uint8_t *)map;
-}