[GH #844] Add ChangeLog entry

And improve a couple of others.

ChangeLog

@@ -5,19 +5,20 @@
           constant strings. [GH #837]
         + Fixed ByteBuffer set_string_native, which became out of sync with
           two internal buffers. [GH #835]
-        + Preload Configure steps when called with perl -d Configure.pl
+        + Preload Configure steps when called with perl -d Configure.pl [GH #833]
         + Strip unneeded config keys from installed config hash. Saves 6360
-          bytes from every installed executable.
+          bytes from every installed executable. [GH #824]
     - Build
-        + Improved warnings for clang.
+        + Improved warnings for clang. [GH #843]
         + Cleaned wrong UNUSED(arg) macros in all pmc's due to an improved
           pmc2c compiler, which SHIMs all UNUSED args. [GH #836]
+        + Added clang++ support and a new auto::alignof Configure step. [GH #844]
     - Branches
         + The threads branch is almost ready to be merged. Some remaining races
           have been fixed. There are only some remaining platforms errors on
           darwin/x86.
     - Libraries
-        + Fixed Mime/Base64 encode_base64. Split long lines at 76 chars [GH #826]
+        + Fixed Mime/Base64 encode_base64. Split long lines at 76 chars. [GH #826]
     - Documentation
         + Cleaned up removed parrot cmdline options -D/-O/-v from --help output and
           running.pod [GH #838]