#142 Accept arbitrary xmlns attributes on <technique> elements

[Thomas Wayden]

The 1.5.0 specification, page 5-144, gives the following example:

<technique profile="Max" xmlns:max="some/max/schema">

This is not supported by ColladaDOM.

An error is logged:

Warning: The DOM was unable to create an attribute xmlns:Max = some/max/schema at line 214.
Probably a schema violation.