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, 132 deletions

diff --git a/third_party/git/base85.c b/third_party/git/base85.c
deleted file mode 100644
index 5ca601ee14fd..000000000000
--- a/third_party/git/base85.c
+++ /dev/null
@@ -1,132 +0,0 @@
-#include "cache.h"
-
-#undef DEBUG_85
-
-#ifdef DEBUG_85
-#define say(a) fprintf(stderr, a)
-#define say1(a,b) fprintf(stderr, a, b)
-#define say2(a,b,c) fprintf(stderr, a, b, c)
-#else
-#define say(a) do { /* nothing */ } while (0)
-#define say1(a,b) do { /* nothing */ } while (0)
-#define say2(a,b,c) do { /* nothing */ } while (0)
-#endif
-
-static const char en85[] = {
-	'0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
-	'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J',
-	'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T',
-	'U', 'V', 'W', 'X', 'Y', 'Z',
-	'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j',
-	'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't',
-	'u', 'v', 'w', 'x', 'y', 'z',
-	'!', '#', '$', '%', '&', '(', ')', '*', '+', '-',
-	';', '<', '=', '>', '?', '@', '^', '_',	'`', '{',
-	'|', '}', '~'
-};
-
-static char de85[256];
-static void prep_base85(void)
-{
-	int i;
-	if (de85['Z'])
-		return;
-	for (i = 0; i < ARRAY_SIZE(en85); i++) {
-		int ch = en85[i];
-		de85[ch] = i + 1;
-	}
-}
-
-int decode_85(char *dst, const char *buffer, int len)
-{
-	prep_base85();
-
-	say2("decode 85 <%.*s>", len / 4 * 5, buffer);
-	while (len) {
-		unsigned acc = 0;
-		int de, cnt = 4;
-		unsigned char ch;
-		do {
-			ch = *buffer++;
-			de = de85[ch];
-			if (--de < 0)
-				return error("invalid base85 alphabet %c", ch);
-			acc = acc * 85 + de;
-		} while (--cnt);
-		ch = *buffer++;
-		de = de85[ch];
-		if (--de < 0)
-			return error("invalid base85 alphabet %c", ch);
-		/* Detect overflow. */
-		if (0xffffffff / 85 < acc ||
-		    0xffffffff - de < (acc *= 85))
-			return error("invalid base85 sequence %.5s", buffer-5);
-		acc += de;
-		say1(" %08x", acc);
-
-		cnt = (len < 4) ? len : 4;
-		len -= cnt;
-		do {
-			acc = (acc << 8) | (acc >> 24);
-			*dst++ = acc;
-		} while (--cnt);
-	}
-	say("\n");
-
-	return 0;
-}
-
-void encode_85(char *buf, const unsigned char *data, int bytes)
-{
-	say("encode 85");
-	while (bytes) {
-		unsigned acc = 0;
-		int cnt;
-		for (cnt = 24; cnt >= 0; cnt -= 8) {
-			unsigned ch = *data++;
-			acc |= ch << cnt;
-			if (--bytes == 0)
-				break;
-		}
-		say1(" %08x", acc);
-		for (cnt = 4; cnt >= 0; cnt--) {
-			int val = acc % 85;
-			acc /= 85;
-			buf[cnt] = en85[val];
-		}
-		buf += 5;
-	}
-	say("\n");
-
-	*buf = 0;
-}
-
-#ifdef DEBUG_85
-int main(int ac, char **av)
-{
-	char buf[1024];
-
-	if (!strcmp(av[1], "-e")) {
-		int len = strlen(av[2]);
-		encode_85(buf, av[2], len);
-		if (len <= 26) len = len + 'A' - 1;
-		else len = len + 'a' - 26 - 1;
-		printf("encoded: %c%s\n", len, buf);
-		return 0;
-	}
-	if (!strcmp(av[1], "-d")) {
-		int len = *av[2];
-		if ('A' <= len && len <= 'Z') len = len - 'A' + 1;
-		else len = len - 'a' + 26 + 1;
-		decode_85(buf, av[2]+1, len);
-		printf("decoded: %.*s\n", len, buf);
-		return 0;
-	}
-	if (!strcmp(av[1], "-t")) {
-		char t[4] = { -1,-1,-1,-1 };
-		encode_85(buf, t, 4);
-		printf("encoded: D%s\n", buf);
-		return 0;
-	}
-}
-#endif