Merged revision(s) 45029 from trunk:
LCL: fixed typos in comments ("extention" -> "extension"), patch by Reinier, bug 26154
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git-svn-id: http://svn.freepascal.org/svn/lazarus/branches/fixes_1_2@45030 4005530d-fff6-0310-9dd1-cebe43e6787f