Fixed issue where a use tag inside a clip-path did not retain parser mode.
Disregard namespaces in front of tag names
Added support for inner svg tags: 
 - Calculate transformation matrix based on x, y of svg
 - Draw clipping rect based on width and height
 - Calculate transformation matrix based on viewbox and preserveaspectratio
Caching for inline files added.
Caching for inline files added.
Merge branch 'master' of github.com:SamMousa/tcpdf
Merge branch 'master' of https://github.com/tecnickcom/TCPDF

Conflicts:
	tcpdf.php
Fixed support for unicode
Fixed issue with image cache
Merge branch 'master' of github.com:SamMousa/TCPDF-1

Conflicts:
	tcpdf.php