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/Userland/ifconfig.cpp b/Userland/ifconfig.cpp
index dfebd5aec5..7a2d347551 100644
--- a/Userland/ifconfig.cpp
+++ b/Userland/ifconfig.cpp
@@ -78,8 +78,8 @@ int main(int argc, char** argv)
         return 0;
     }
 
-    auto file = CFile::construct("/proc/net/adapters");
-    if (!file->open(CIODevice::ReadOnly)) {
+    auto file = Core::File::construct("/proc/net/adapters");
+    if (!file->open(Core::IODevice::ReadOnly)) {
         fprintf(stderr, "Error: %s\n", file->error_string());
         return 1;
     }