build: use sub-dir names in docfiles

Signed-off-by: Yukai Chou <[email protected]>

build.lua

@@ -12,23 +12,13 @@ docfiledir = "./doc/generic/pgf"
 docfiles =
   {
     "RELEASE_NOTES.md", "description.html", -- Part of the release script
-    "color.cfg", "pgfmanual.cfg", "images/*.jpg", "*.tex" -- Build the PDF
+    "color.cfg", "pgfmanual.cfg", "images", "plots", "*.tex" -- Build the manual
   }
 tdsroot = "generic"
 typesetfiles = {"pgfmanual.tex"}
 typesetexe = "lualatex"
 flatten = false
 
--- To allow writing
-function docinit_hook()
-  mkdir(typesetdir .. "/plots")
-  -- Execute cp() manually to keep the directory structure, otherwise if
-  -- "plots/*.table" is appended to docfiles, ".table" files will be copied
-  -- directly to typesetdir, not typesetdir .. "/plots".
-  cp("plots/*.table", docfiledir, typesetdir .. "/plots")
-  return 0
-end
-
 -- Set up to allow testing dvips, etc.
 specialformats = specialformats or {}
 specialformats["latex"] = specialformats["latex"] or