promisor-remote: compare remote names case sensitively

Because the "[remote "nick"] fetch = ..." configuration variables
have the nickname in the second part, the nicknames are case
sensitive, unlike the first and the third component (i.e.
"remote.origin.fetch" and "Remote.origin.FETCH" are the same thing,
but "remote.Origin.fetch" and "remote.origin.fetch" are different).

Let's follow the way Git works in general and compare the remote
names case sensitively when processing advertised remotes.

Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Author: chriscool

Documentation/config/promisor.adoc

@@ -26,5 +26,5 @@ promisor.acceptFromServer::
 	server will be accepted. By accepting a promisor remote, the
 	client agrees that the server might omit objects that are
 	lazily fetchable from this promisor remote from its responses
-	to "fetch" and "clone" requests from the client. See
-	linkgit:gitprotocol-v2[5].
+	to "fetch" and "clone" requests from the client. Name and URL
+	comparisons are case sensitive. See linkgit:gitprotocol-v2[5].

promisor-remote.c

@@ -370,13 +370,13 @@ char *promisor_remote_info(struct repository *repo)
 
 /*
  * Find first index of 'nicks' where there is 'nick'. 'nick' is
- * compared case insensitively to the strings in 'nicks'. If not found
+ * compared case sensitively to the strings in 'nicks'. If not found
  * 'nicks->nr' is returned.
  */
 static size_t remote_nick_find(struct strvec *nicks, const char *nick)
 {
 	for (size_t i = 0; i < nicks->nr; i++)
-		if (!strcasecmp(nicks->v[i], nick))
+		if (!strcmp(nicks->v[i], nick))
 			return i;
 	return nicks->nr;
 }