Add a link to vim_faq on the top page

Author: k-takata

Makefile

@@ -7,6 +7,7 @@ html:
 	mkdir -p target/html/doc
 	if [ ! -d vim/runtime/doc ]; then git clone --depth=1 https://github.com/vim/vim.git; fi
 	if [ ! -d vim_faq/doc ]; then git clone --depth=1 https://github.com/chrisbra/vim_faq.git; fi
+	cd vim; git apply ../tools/add-vimfaq-link.diff; cd ..
 	cp vim/runtime/doc/*.txt target/html/doc
 	cp vim_faq/doc/*.txt target/html/doc
 	cp tools/buildhtml.vim tools/makehtml.vim target/html

tools/add-vimfaq-link.diff

@@ -0,0 +1,14 @@
+diff --git a/runtime/doc/help.txt b/runtime/doc/help.txt
+index 58049f6..f5a7ed4 100644
+--- a/runtime/doc/help.txt
++++ b/runtime/doc/help.txt
+@@ -206,6 +206,9 @@ Standard plugins ~
+ |pi_vimball.txt|   Create a self-installing Vim script
+ |pi_zip.txt|       Zip archive explorer
+ 
++Others ~
++|vim_faq.txt|	FAQ
++
+ LOCAL ADDITIONS:				*local-additions*
+ 
+ ------------------------------------------------------------------------------