Tint2conf: support border sides (issue #580, thanks @stophe)

src/util/common.c

@@ -44,6 +44,17 @@
 #include <librsvg/rsvg.h>
 #endif
 
+char *append(char *s, char c) {
+    int len = strlen(s);
+    char buf[len+2];
+
+    strcpy(buf, s);
+    buf[len] = c;
+    buf[len + 1] = 0;
+
+    return strdup(buf);
+}
+
 void copy_file(const char *path_src, const char *path_dest)
 {
 	if (g_str_equal(path_src, path_dest))