Add a flag to control the use of identityref types with values

[gcampbell512]

A new flag SCH_F_IDREF_VALUES has been created to control the addition of identityref information to leaf values.

[tony-vanderpeet]

I take it the flag gets set somewhere? Carl was thinking that this piece of code should be controlled by a flag, but I think he was thinking of the RESTCONF flag, which is not a schema flag.

[gcampbell512]

There is an equivalent patch in apteryx-rest rest.c. The FLAG was named more for what it does than the generic term FLAG.._RESTCONF