Mark files generated by unicode as linguist-generated

Author: leonerd

.gitattributes

@@ -1,9 +1,11 @@
 .git_patch export-subst
+charclass_invlists.h linguist-generated
 embedvar.h linguist-generated
 keywords.c linguist-generated
 keywords.h linguist-generated
 lib/B/Op_private.pm linguist-generated
 lib/feature.pm linguist-generated
+lib/unicore/uni_keywords.pl linguist-generated
 lib/warnings.pm linguist-generated
 feature.h linguist-generated
 opcode.h linguist-generated
@@ -12,6 +14,8 @@ perly.act linguist-generated
 perly.h linguist-generated
 perly.tab linguist-generated
 pp_proto.h linguist-generated
+regcharclass.h linguist-generated
+uni_keywords.h linguist-generated
 warnings.h linguist-generated
 *.pl linguist-language=Perl
 *.pm linguist-language=Perl