[PATCH] make git compile on old version of engarde linux

The following makes git build on my instance of Engarde Linux 1.x

The definition of S_IFLNK and S_ISLNK seems to be mising in the headers,
but a simple test showed that the correct value for it is still 0120000,
same as on more modern systems.

With this patch, git built with 
$make NO_CURL=1 NO_SYMLINK_HEAD=1 NO_PYTHON=1
seems to work with no issues so far (more than a week now).

---

Make git build on Engarde Linux 1.x (which is missing
the definition for S_IFLNK/S_ISLNK)

Signed-off-by: Michael S. Tsirkin <redacted>

--- git/cache.h.orig	Thu Jun 29 11:43:45 2006
+++ git/cache.h	Thu Jun 29 11:45:13 2006

@@ -6,6 +6,13 @@
 #include SHA1_HEADER
 #include <zlib.h>
 
+#ifndef S_IFLNK
+#define S_IFLNK        0120000
+#endif
+#ifndef S_ISLNK
+#define S_ISLNK(m)    (((m) & S_IFMT) == S_IFLNK)
+#endif
+
 #if ZLIB_VERNUM < 0x1200
 #define deflateBound(c,s)  ((s) + (((s) + 7) >> 3) + (((s) + 63) >> 6) + 11)
 #endif

-- 
MST