* Patch from Luiz Americo to allow reading data in blockread state

git-svn-id: http://svn.freepascal.org/svn/fpc/trunk@28003 3ad0048d-3df7-0310-abae-a5850022a9f2
* Add enable/disablecontrols for target dataset (patch from Luiz Americo, bug ID 26364)

git-svn-id: http://svn.freepascal.org/svn/fpc/trunk@28004 3ad0048d-3df7-0310-abae-a5850022a9f2