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, 1 insertions, 1 deletions

diff --git a/Userland/umount.cpp b/Userland/umount.cpp
index 845c3a50bf..d3e708e740 100644
--- a/Userland/umount.cpp
+++ b/Userland/umount.cpp
@@ -32,7 +32,7 @@ int main(int argc, char** argv)
 {
     const char* mount_point = nullptr;
 
-    CArgsParser args_parser;
+    Core::ArgsParser args_parser;
     args_parser.add_positional_argument(mount_point, "Mount point", "mountpoint");
     args_parser.parse(argc, argv);