Fix tags for llvm

Signed-off-by: Michael Opdenacker <michael.opdenacker@bootlin.com>

projects/llvm.sh

@@ -1,8 +1,22 @@
 # Elixir definitions for LLVM
 
+list_tags()
+{
+    echo "$tags" |
+    tac |
+    grep ^llvmorg-[0-9]*[\.][0-9]*
+}
+
 list_tags_h()
 {
     echo "$tags" |
+    grep ^llvmorg |
+    grep -v init |
     tac |
     sed -r 's/^llvmorg-([0-9]*)\.([0-9]*)(.*)$/v\1 v\1.\2 llvmorg-\1.\2\3/'
 }
+
+get_latest()
+{
+    git tag | grep 'llvmorg' | grep -v init | sort -V | tail -n 1
+}