Changed all functions names to avoid collisions with functions that shared the same name

git-svn-id: https://plugins.svn.wordpress.org/new-post-automatic-xml-backup-by-email/trunk@857413 b8457f37-d9ea-0310-8a92-e5e31aec5664
Changed all functions names to avoid collisions with functions that shared the same name

git-svn-id: https://plugins.svn.wordpress.org/new-post-automatic-xml-backup-by-email/trunk@857414 b8457f37-d9ea-0310-8a92-e5e31aec5664
* Updated the code to the latest WordPress export code
* Sometimes, the xml file had no name since the post_name was blank. In that case we use the post ID as the xml file name.

git-svn-id: https://plugins.svn.wordpress.org/new-post-automatic-xml-backup-by-email/trunk@857416 b8457f37-d9ea-0310-8a92-e5e31aec5664
Updated to version 1.0.3

git-svn-id: https://plugins.svn.wordpress.org/new-post-automatic-xml-backup-by-email/trunk@857417 b8457f37-d9ea-0310-8a92-e5e31aec5664
Changed wxr_cdata to npxbe_cdata

git-svn-id: https://plugins.svn.wordpress.org/new-post-automatic-xml-backup-by-email/trunk@857429 b8457f37-d9ea-0310-8a92-e5e31aec5664
Replace the_guid for get_the_guid since the_guid does an echo and breaks the plugin.

git-svn-id: https://plugins.svn.wordpress.org/new-post-automatic-xml-backup-by-email/trunk@857435 b8457f37-d9ea-0310-8a92-e5e31aec5664