Upgrade tcpdf to 5.9.204
Do not use font name instead of font size in PDF schema (bug #3788)
Revert "fix bug #3783, instanciate class before calling static method"

This reverts commit 27148aa738defffc4ccfb2971ab6c9cba0c269d1.

-> fix does not work : methods of a class can't be called usçg a variable before PHP 5.3
Temporary workaround for bug #3783 :
       Calling a method from a variable class is not possible before PHP 5.3.
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Check if COM class is supported before using it (bug #3762)
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Merge remote-tracking branch 'origin/master'
Update TCPDF to 5.9.205
Merge remote-tracking branch 'origin/master'
bug #2951 [export] Correctly export decimal fields.
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Missing changelog entries
Merge remote-tracking branch 'origin/master'
This variable might be unset
bug #3519 [export] Prevent infinite recursion in PDF export.
Merge remote-tracking branch 'origin/master'
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