updated for version 7.3.970
Problem:    Syntax highlighting can be slow.
Solution:   Include the NFA regexp engine.  Add the 'regexpengine' option to
            select which one is used. (various authors, including Ken Takata,
            Andrei Aiordachioaie, Russ Cox, Xiaozhou Liua, Ian Young)
diff --git a/Filelist b/Filelist
index 6503dbc..ee5ad8f 100644
--- a/Filelist
+++ b/Filelist
@@ -57,6 +57,7 @@
 		src/popupmnu.c \
 		src/quickfix.c \
 		src/regexp.c \
+		src/regexp_nfa.c \
 		src/regexp.h \
 		src/screen.c \
 		src/search.c \