* docs/api_extension/*: Replace example files. * docs/api_extension.html.in: Rewrite to match new example files.
Update the API Extensions doc to reflect new source directory layout.
This patch is the result of running the following command in the docs directory: sed -i 's/\t/ /g; s/\s*$//' *.html.in * docs/*.html.in:convert tabs into 8 spaces and remove trailing whitespace