Libraries: Create top level directory for libraries.

Things were getting a little crowded in the project root, so this patch
moves the Lib*/ directories into Libraries/.

Libraries/LibHTML/Layout/LayoutText.cpp

@@ -0,0 +1,39 @@
+#include <LibHTML/Layout/LayoutText.h>
+#include <ctype.h>
+
+LayoutText::LayoutText(const Text& text, const StyledNode& styled_node)
+    : LayoutNode(&text, styled_node)
+{
+}
+
+LayoutText::~LayoutText()
+{
+}
+
+static bool is_all_whitespace(const String& string)
+{
+    for (int i = 0; i < string.length(); ++i) {
+        if (!isspace(string[i]))
+            return false;
+    }
+    return true;
+}
+
+const String& LayoutText::text() const
+{
+    static String one_space = " ";
+    if (is_all_whitespace(node().data()))
+        return one_space;
+    return node().data();
+}
+
+void LayoutText::compute_runs()
+{
+
+}
+
+void LayoutText::layout()
+{
+    ASSERT(!has_children());
+    compute_runs();
+}