LibCore: Put all classes in the Core namespace and remove the leading C

I've been wanting to do this for a long time. It's time we start being
consistent about how this stuff works.

The new convention is:

- "LibFoo" is a userspace library that provides the "Foo" namespace.

That's it :^) This was pretty tedious to convert and I didn't even
start on LibGUI yet. But it's coming up next.

1 files changed, 2 insertions, 2 deletions

diff --git a/Applications/TextEditor/TextEditorWidget.cpp b/Applications/TextEditor/TextEditorWidget.cpp
index c1538f60de..f519684d1f 100644
--- a/Applications/TextEditor/TextEditorWidget.cpp
+++ b/Applications/TextEditor/TextEditorWidget.cpp
@@ -431,8 +431,8 @@ void TextEditorWidget::update_title()
 
 void TextEditorWidget::open_sesame(const String& path)
 {
-    auto file = CFile::construct(path);
-    if (!file->open(CIODevice::ReadOnly)) {
+    auto file = Core::File::construct(path);
+    if (!file->open(Core::IODevice::ReadOnly)) {
         GMessageBox::show(String::format("Opening \"%s\" failed: %s", path.characters(), strerror(errno)), "Error", GMessageBox::Type::Error, GMessageBox::InputType::OK, window());
         return;
     }