Add preliminarily support for org-mode version 8.0
Improve support for different versions
Fix conditional
Make org2blog/wp-replace-pre compatible with org 8
Merge remote-tracking branch 'ptrv/org-8-support'

* ptrv/org-8-support:
  Make org2blog/wp-replace-pre compatible with org 8
  Fix conditional
  Improve support for different versions
  Add preliminarily support for org-mode version 8.0

Conflicts:
	org2blog.el