Add comments to various %option items to explain what they're doing.

Add comments to various %option items to explain what they're doing.
Move the %options to the beginning if they weren't already there, and
put them in the same order in all files.

Add "prefix=" options to .l files that don't already have them, so we
don't have to pass a "-P" option.

Add "never-interactive" and "noyywrap" options to our lexical analyzers,
to remove extra isatty() checks and to eliminate the need for yywrap()
from the Flex library.

Get rid of %option nostdinit - that's the default.

Add .l.c: rules to Makefile.am files, replacing the rules for specific
.l files.  Have those rules all check that $(LEX) is set.

Update the address for the FSF.

git-svn-id: http://anonsvn.wireshark.org/wireshark/trunk@22424 f5534014-38df-0310-8fa8-9805f1628bb7