SynEdit: speed up large operations (search replace / indent): space trimmer

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@43766 4005530d-fff6-0310-9dd1-cebe43e6787f
SynEdit: avoid duplicate call

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@43767 4005530d-fff6-0310-9dd1-cebe43e6787f
SynEdit: speed up large operations ([un]indent)

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@43768 4005530d-fff6-0310-9dd1-cebe43e6787f