Add mapping for parentheses to commas in prose

<Leader>cc now changes things set off by parentheses (like this) into
things set off by two commas, like this, blah.
Add <Alt-F12> as alternative to <Alt-F4>

Uses :confirm q
<Leader>lp sets syntax mode to PHP
Use 'smart3' one-digit mode for Vertigo

Add support for 'smartN', and now use it, with 'smart3'