* move Wt::Dbo templates to wt/dbo subdiretory
	deleted:    class_declaration.tpl
	new file:   wt/dbo/class_declaration.tpl
	new file:   wt/dbo/class_definition.tpl
add referingVariableName, fix white space

* add referingVariableName convenience method for _id cols
* reformat header, implementing whitespace policy
add REFERING_VARIABLE_NAME, fix "long long" bug

* added tag REFERING_VARIABLE_NAME (ie. REFERENCED_VARIABLE_NAME without
the "_id" suffix
* fix Qt specific to type support for "long long": toLongLong ..
add escape_mysql_keyword - support for tables/columns named with mysql keywords
clean up key strings, remove const char *s
add referencedVariableName conv. method
* fix WSqlDatum data<> methods, do not reuse sstream (it appends data ..)