New function org-dotemacs-load-blocks

org-dotemacs-load-blocks loads the code blocks directly from the org
file instead of saving them to a file first. It also does error checking
and reporting.

Altered items:
org-dotemacs-load-blocks
Changes to org-dotemacs-load-file

Now it org-dotemacs-load-file uses the org-dotemacs-load-blocks function

Altered items:
org-dotemacs-load-file
Remove org-dotemacs-extract-code function

No longer needed.

Altered items:
org-dotemacs-extract-code, org-dotemacs-load-file