Add note about why "Perl 6"

closes #294

Author: coke

doc/Language/faq.pod6

@@ -534,6 +534,19 @@ bootstrapping files created by earlier runs of the build process.
 
 =head1 Meta Questions and Advocacy
 
+=head2 Why is Perl 6 called Perl?
+
+… As opposed to some other name that didn't imply all the things
+that the higher number might indicate on other languages.
+
+The short answer is that it was Larry's choice under
+L<Rule 1|http://perldoc.perl.org/5.12.4/perlhack.html#DESCRIPTION>.
+
+The community considers Perl 5 and Perl 6 sister languages - they have
+a lot in common, address many of the same problem spaces, but Perl 6 is not
+intended to replace Perl 5. In fact, both languages interoperate with
+each other.
+
 =head2 When will Perl 6 be ready? Is it ready now?
 
 Readiness of programming languages and their compilers is not a binary

xt/words.pws

@@ -444,6 +444,7 @@ instantiation
 int
 interop
 interoperability
+interoperate
 interoperation
 intmax
 introspectiveness