Merge pull request #162 from nmlgc/master

Three fixes for hashtable seeding on Windows
Merge pull request #163 from vincentbernat/fix/unpack-mix-optional-and-strict

Fix unpack when mixing strict mode and optional keys
Merge pull request #164 from vincentbernat/fix/gitignore

Add new autotools-generated files to .gitignore
Merge branch '2.6'