[fpc-devel] minor spelling glitch in FPImage.pp

[Howard Page-Clark]

Not sure if this warrants a bug report or not.
In the FPImage.pp unit of the fcl-image package file extension data is 
stored, but the sources misspell this term as extention.

in the field FExtention (line 224)
in the properties Extentions (line 252) and DefaultExtention (line 253)
and in parameter names in lines 242, 245, 247.

Howard