codegen/dumper.xsl has missing type support (xml and uint32)

[rhdunn]

When using the -d command to dump swf files, the output does not support xml (e.g. RDF metadata) and uint32 (e.g. pushing stack values).

The xml type can be fixed by treating it as a string:

-<xsl:template match="string" mode="dump">
+<xsl:template match="string|xml" mode="dump">

The uint32 type (and other missing types) can be handled through the printf logic by providing a default template:

-<xsl:template match="byte|word|byteOrWord|integer|fixedpoint|fixedpoint2|bit|u30|s24" mode="dump">
+<xsl:template match="*" mode="dump">

This addresses these issues with the dump output.