#1121 Code folding for if(): endif; structures

[Skeets O'Reilly]

Currently there is no code folding support for any of the following (php):

if():
endif;
for():
endfor;
switch():
endswitch;
foreach():
endforeach;

[Neil Hodgson]

Its a bit complex as its really the ':' that determines an alternate syntax block and the ':' may appear for other purposes. I'll accept a good implementation but won't work on this myself.