v0.25.14: rename Drive raw-read API to remove third-party project breadcrumbs

Pure rename pass — no behavioral change:
- Drive::is_libredrive_active() → Drive::is_raw_read_active()
- PlatformDriver::is_libredrive_active() trait method (same rename)
- Mt1959 struct field libredrive_active → raw_read_active
- Error::AacsLibredriveUnsupported → Error::AacsRawReadUnsupported
  (numeric code E7016 unchanged)
- All callers, tests, and doc comments updated to the new name.

Old identifiers removed entirely; downstream consumers must update.
Mirrored in bdemu, freemkv, autorip, freemkv-tools.

src/drive/mod.rs

@@ -432,7 +432,7 @@ impl Drive {
         }
     }
 
-    /// True if the drive is currently in libredrive raw-read mode.
+    /// True if the drive is currently in raw-read mode.
     ///
     /// Detected by the platform driver during `init()` from the unlock
     /// response's mode markers. When true:
@@ -444,11 +444,11 @@ impl Drive {
     ///
     /// AACS layer code should branch on this: if true, skip
     /// `aacs::handshake::aacs_authenticate` (the cert dance) and read
-    /// VID via the libredrive alternate path. If false, fall back to
-    /// the standard cert-based handshake.
-    pub fn is_libredrive_active(&self) -> bool {
+    /// VID via the alternate VID read path. If false, fall back to the
+    /// standard cert-based handshake.
+    pub fn is_raw_read_active(&self) -> bool {
         match self.driver {
-            Some(ref d) => d.is_libredrive_active(),
+            Some(ref d) => d.is_raw_read_active(),
             None => false,
         }
     }