support poolalloc as checked out from svn

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@39983 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/configure b/configure
index 7537318..a3a758c 100755
--- a/configure
+++ b/configure
@@ -950,6 +950,7 @@
 projects/llvm-java
 projects/llvm-tv
 projects/llvm-poolalloc
+projects/poolalloc
 projects/llvm-kernel'
 
 # Initialize some variables set by options.
@@ -2086,6 +2087,8 @@
    ;;
       llvm-poolalloc) subdirs="$subdirs projects/llvm-poolalloc"
  ;;
+      poolalloc) subdirs="$subdirs projects/poolalloc"
+ ;;
       llvm-kernel)  subdirs="$subdirs projects/llvm-kernel"
  ;;
       *)