Implement a web backend for rustdoc_ng

This large commit implements and `html` output option for rustdoc_ng. The
executable has been altered to be invoked as "rustdoc_ng html <crate>" and
it will dump everything into the local "doc" directory. JSON can still be
generated by changing 'html' to 'json'.

This also fixes a number of bugs in rustdoc_ng relating to comment stripping,
along with some other various issues that I found along the way.

The `make doc` command has been altered to generate the new documentation into
the `doc/ng/$(CRATE)` directories.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/libsyntax/ext/format.rs b/src/libsyntax/ext/format.rs
index cace4648df2..d33ae069112 100644
--- a/src/libsyntax/ext/format.rs
+++ b/src/libsyntax/ext/format.rs
@@ -262,7 +262,7 @@ impl Context {
                 let span = match self.names.find(&name) {
                     Some(e) => e.span,
                     None => {
-                        let msg = fmt!("There is no argument named `%s`", name);
+                        let msg = fmt!("there is no argument named `%s`", name);
                         self.ecx.span_err(self.fmtsp, msg);
                         return;
                     }