Resolve symlinks when gathering libtool version.

Author: gordonmessmer

tools/elfdeps.c

@@ -44,7 +44,15 @@ typedef struct elfInfo_s {
 static char *getLibtoolVer(const char *filename)
 {
     const char *so;
+    char dest[PATH_MAX];
+    int destsize = 0;
     int found_digit, found_dot = 0;
+
+    destsize = readlink(filename, dest, PATH_MAX);
+    if (destsize > 0) {
+	dest[destsize] = 0;
+	filename = dest;
+    }
     // Start from the end of the string.  Verify that it ends with
     // numbers and dots, preceded by ".so.".
     so = filename + strlen(filename);