lazutils: fixed UTF8FindNearestCharStart for 64bit long strings

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@45053 4005530d-fff6-0310-9dd1-cebe43e6787f
LCL: debugging ifdefs

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@45054 4005530d-fff6-0310-9dd1-cebe43e6787f