fix org-reload and add parameters to customize output from org-version
* org.el(org-version): Add optional parameters 'full and 'message
to optionally return the full version string and echo to message
area in non-interactive calls.
* org.el(org-submit-bug-report): Add optional parameter 'full to
call of (org-version) so that the bug report has all version
information.
* org.el(org-reload): Simplify file-re (orgtbl-*.el files do not
exist anymore). Keep org-*.el at the end of the files list.
Explicitely load org-version.el (since it doesn't provide feature
'org-version) at the very end, but ignore errors when it doesn't
exist. Add parameters 'full and 'message to the call
of (org-version) so that after reload the full version information
is displayed in the message area again.