Add a special handling for fs_manifest rule

Some servers return fs_manifest key-value pair, which has it's value
split by newline, followed by a space. qstat breaks on such servers (at
least, it can't fetch the rules and players, because it treats newline
as beginning of player data, an unexpected data causes qstat to break
with error).

Following patch makes special handling for fs_manifest key, that doesn't
treat newline as a separator, while keeping all other parsing intact.

Signed-off-by: Vitaly Ostrosablin <tmp6154@yandex.ru>

qstat.c

@@ -6453,7 +6453,7 @@ deal_with_q2_packet(struct qserver *server, char *rawpkt, int pktlen)
 			pkt += strlen(key) + 1;
 
 			// Find the value
-			end = strpbrk(pkt, "\\\n");
+			end = strpbrk(pkt, strcmp(key, "fs_manifest") ? "\\\n" : "\\");
 			if (NULL == end) {
 				// Last value
 				end = rawpkt + pktlen;