hotfix for LRU on python2
Merge pull request #369 from scopatz/unames

hotfix for LRU on python2
Rename README.txt to README.rst
Merge pull request #375 from funkotron/patch-1

Rename README.txt to README.rst
pass '-march=native' C flag by default, but fall back on '-msse2' as before if compiler chokes on it
Merge pull request #379 from alimuldal/march_native_by_default

Change CFLAGS to '-march=native' by default
Unit tests for gh-367 and gh-369
Remove the outdated Makefile_windows
Fix the manifest template to include the rename README.rst
Updated RELEASE_NOTES.txt
Now print_versions also reports the version of complibs used by blosc