OpenSystemsDevelopment / qpdf

Using search and replace.

Add new method QPDF::newReserved()

Add new convenience class QPDFObjGen::Guard

Also, name the type QPDFValue::Description.

Avoid dynamic casting.

Exclude uninitialized, destroyed and reserved objects.

…ternal2 and copyObject2

copyObject2 repeats a second time what
new_obj = QPDFObjectHandle(obj->copy(true))
in shallowCopyInternal2 already did.

…ternal2 and copyObject2

Have separate versions for unsafeShallowCopy, shallowCopy and makeDirect.

Add optional parameter shallow. Change logic errors to runtime errors.