* corrections from Mantis #20194. 
     - tbitmapheader is not a redef, from redef -> struct
     - some -A types had char types that were $ifdef unicode dependent. Fixed.
     - some -A types had char types in numeric form (bchar), where Delphi
	uses Pascal char types (ansichar)  


git-svn-id: http://svn.freepascal.org/svn/fpc/trunk@24449 3ad0048d-3df7-0310-abae-a5850022a9f2
 * set tchar to ansichar if ifndef unicode. Probably doesn't matter, since but
   reads cleaner.


git-svn-id: http://svn.freepascal.org/svn/fpc/trunk@24450 3ad0048d-3df7-0310-abae-a5850022a9f2