Rename doc.css to doc.css.in.

As we'll need to copy it to buck-out/gen anyway, this will save some
future trouble.

Change-Id: I91cfadd15d6642a8dfaf73b6243411e9492781ca

Documentation/BUCK

@@ -19,7 +19,7 @@ genrule(
   srcs = glob([
       'images/*.jpg',
       'images/*.png',
-    ]) + ['doc.css'],
+    ]) + [':doc.css'],
   out = 'html.zip',
   visibility = ['PUBLIC'],
 )
@@ -39,6 +39,13 @@ genrule(
   out = 'licenses.txt',
 )
 
+genrule(
+  name = 'doc.css',
+  srcs = ['doc.css.in'],
+  cmd = 'cp $SRCS $OUT',
+  out = 'doc.css',
+)
+
 python_binary(
   name = 'gen_licenses',
   main = 'gen_licenses.py',

Documentation/asciidoc.defs

@@ -34,7 +34,7 @@ def genasciidoc(
   for attribute in attributes:
     asciidoc.extend(['-a', attribute])
   asciidoc.append('$SRCS')
-  newsrcs = ["doc.css"]
+  newsrcs = [":doc.css"]
   for src in srcs:
     fn = src
     # We have two cases: regular source files and generated files.