Documented the SmallCaps() native scripting function.
Documented change to script search behavior.

Fontforge will now automatically find a script that ends in .ff or .pe
without needing to include that in the name of the call to the script.
Merge pull request #1052 from blipvert/fixes/18

Documented the SmallCaps() native scripting function.
Merge pull request #1053 from blipvert/fixes/19

Documented change to script search behavior.