Ticket 3547: code cleanup bebore 4.8.16 release.

filehighlight.ini: add lzma extension.

Signed-off-by: Andrew Borodin <aborodin@vmail.ru>

misc/filehighlight.ini

@@ -28,7 +28,7 @@
     regexp=(^#.*|.*~$)
 
 [archive]
-    extensions=gz;bz2;tar;tgz;rpm;Z;rar;zip;arj;cab;lzh;lha;zoo;arc;ark;xz;tbz;tbz2;7z;ace;lz4;lz;tlz
+    extensions=gz;bz2;tar;tgz;rpm;Z;rar;zip;arj;cab;lzh;lha;zoo;arc;ark;xz;tbz;tbz2;7z;ace;lz4;lz;tlz;lzma
 
 [doc]
     extensions=txt;doc;rtf;diz;ctl;me;ps;pdf;xml;xsd;xslt;dtd;html;shtml;htm;mail;msg;lsm;po;nroff;man;tex;sgml;css;text;letter;chm;docx;docm;xlsx;xlsm;pptx;pptm