Revert "Replace zero-length array decls with []."

This reverts 6c5f9baa3b commit, whose
change breaks gcc-2.95.

Not that I ignore portability to compilers that are properly C99, but
keeping compilation with GCC working is more important, at least for
now.  We would probably end up declaring with "name[1]" and teach the
allocator to subtract one if we really aimed for portability, but that
is left for later rounds.

Signed-off-by: Junio C Hamano <junkio@cox.net>

cache.h

@@ -104,7 +104,7 @@ struct cache_entry {
 	unsigned int ce_size;
 	unsigned char sha1[20];
 	unsigned short ce_flags;
-	char name[];
+	char name[0];
 };
 
 #define CE_NAMEMASK  (0x0fff)
@@ -287,7 +287,7 @@ extern int checkout_entry(struct cache_entry *ce, struct checkout *state);
 extern struct alternate_object_database {
 	struct alternate_object_database *next;
 	char *name;
-	char base[]; /* more */
+	char base[0]; /* more */
 } *alt_odb_list;
 extern void prepare_alt_odb(void);
 
@@ -300,7 +300,7 @@ extern struct packed_git {
 	unsigned int pack_last_used;
 	unsigned int pack_use_cnt;
 	unsigned char sha1[20];
-	char pack_name[]; /* something like ".git/objects/pack/xxxxx.pack" */
+	char pack_name[0]; /* something like ".git/objects/pack/xxxxx.pack" */
 } *packed_git;
 
 struct pack_entry {
@@ -315,7 +315,7 @@ struct ref {
 	unsigned char new_sha1[20];
 	unsigned char force;
 	struct ref *peer_ref; /* when renaming */
-	char name[];
+	char name[0];
 };
 
 extern int git_connect(int fd[2], char *url, const char *prog);

commit.c

@@ -102,7 +102,7 @@ static unsigned long parse_commit_date(const char *buf)
 static struct commit_graft {
 	unsigned char sha1[20];
 	int nr_parent;
-	unsigned char parent[][20]; /* more */
+	unsigned char parent[0][20]; /* more */
 } **commit_graft;
 static int commit_graft_alloc, commit_graft_nr;
 

ls-files.c

@@ -205,7 +205,7 @@ static int excluded(const char *pathname)
 
 struct nond_on_fs {
 	int len;
-	char name[];
+	char name[0];
 };
 
 static struct nond_on_fs **dir;

receive-pack.c

@@ -24,7 +24,7 @@ struct command {
 	unsigned char updated;
 	unsigned char old_sha1[20];
 	unsigned char new_sha1[20];
-	char ref_name[];
+	char ref_name[0];
 };
 
 static struct command *commands = NULL;

server-info.c

@@ -70,7 +70,7 @@ static struct pack_info {
 	int nr_alloc;
 	int nr_heads;
 	unsigned char (*head)[20];
-	char dep[]; /* more */
+	char dep[0]; /* more */
 } **info;
 static int num_pack;
 static const char *objdir;