Revert "MS switched the character used for the function icon -- this switches it back to the old character that we used in our fonts."
Revert "MS switched the character used for the function icon -- this switches it back to the old character that we used in our fonts."

This reverts commit 598d5e82d4dfeeac4e3133bbd61cffbbcc31d2c4.

playi/pxt,playi/pxt,playi/pxt,playi/pxt