[TYPO3-core] RFC #15644: Replace magic numbers for shortcut_mode with class constants

[Steffen Kamper]

Hi,

good idea, however the constants are in wrong file imho.

It sounds odd to me having tslib_fe::whatever in t3lib_beFunc, so better 
move them to t3lib_page.

And Georg is right with strict comparison.

vg Steffen