Use direct inclusion, not submodules, to bring Javelin into Phabricator

Summary:
Submoduling is slightly convenient for developers but hellishly difficult for many users. Since we make about a dozen updates to Javelin per year, just include the source directly.

Even if we run `git submodule status` more often, this creates additional problems for users with PATH misconfigured.

Fixes T2062 by nuking it from orbit.

Test Plan: Loaded site, browsed around. Grepped for references to submodules.

Reviewers: btrahan, vrana

CC: aran

Maniphest Tasks: T2062

Differential Revision: https://secure.phabricator.com/D4581

Author: epriestley

.gitmodules

@@ -0,0 +1,25 @@
+.DS_Store
+._*
+*.o
+*.so
+*.a
+
+/externals/libfbjs/parser.lex.cpp
+/externals/libfbjs/parser.yacc.cpp
+/externals/libfbjs/parser.yacc.hpp
+/externals/libfbjs/parser.yacc.output
+
+/support/javelinsymbols/javelinsymbols
+/support/jsast/jsast
+/support/jsxmin/jsxmin
+
+# Diviner artifacts 
+/docs/
+/.divinercache/
+
+/support/diviner/.phutil_module_cache
+
+# Mac OSX build artifacts
+/support/jsast/jsast.dSYM/
+/support/jsxmin/jsxmin.dSYM/
+/support/javelinsymbols/javelinsymbols.dSYM/

externals/javelin

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+Copyright (c) 2009, Evan Priestley and Facebook, inc.
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above copyright
+      notice, this list of conditions and the following disclaimer in the
+      documentation and/or other materials provided with the distribution.
+    * Neither the name of Facebook, inc. nor the names of its contributors
+      may be used to endorse or promote products derived from this software
+      without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS'' AND ANY
+EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY
+DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+

externals/javelinjs/.gitignore

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+Javelin is a performance-oriented Javascript library originally developed at
+Facebook. Learn more at <http://www.javelinjs.com/>.
+
+GETTING STARTED
+
+Eat a hearty breakfast. Breakfast is the most important meal of the day!
+
+
+WHAT IS JAVELIN?
+
+Javelin is a compact Javascript library built around event delegation. Its
+primary design goal is performance; it is consequently well-suited to projects
+where performance is very important. It is not as good for smaller scale
+projects where other concerns (like features or ease of development) are more
+important.
+
+
+PACKAGES
+
+Packages come in two flavors: "dev" and "min". The "dev" packages are intended
+for development, and have comments and debugging code. The "min" packages have
+the same code, but with comments and debugging information stripped out and
+symbols crushed. They are intended for use in production -- ha ha ha!
+
+
+FILES
+
+  example/    Example code.
+  LICENSE     A thrilling narrative.
+  pkg/        Ready-built Javelin packages.
+  README      Who knows? Could be anything.
+  src/        Raw sources for Javelin.
+  support/    Support scripts and libraries.