make all d-pointer * const pointers

Doing this disables the implicit copy assignment operator (among others)
which would cause hovac if used on the classes as it would just copy the
pointer, not the data the d-pointer points to. For most of the classes
we don't need a copy assignment operator anyway and in many classes it
was broken before as many contain a pointer of some sort.

Only for our Cacheset Container interfaces we define an explicit copy
assignment operator which could later be implemented to copy the data
from one d-pointer to the other if we need it.

Git-Dch: Ignore

1 files changed, 5 insertions, 5 deletions

diff --git a/apt-pkg/acquire.h b/apt-pkg/acquire.h
index 661b35f34..aa581dfb8 100644
--- a/apt-pkg/acquire.h
+++ b/apt-pkg/acquire.h
@@ -101,7 +101,7 @@ class pkgAcquire
    /** \brief FD of the Lock file we acquire in Setup (if any) */
    int LockFD;
    /** \brief dpointer placeholder (for later in case we need it) */
-   void *d;
+   void * const d;
 
    public:
    
@@ -411,7 +411,7 @@ class pkgAcquire::Queue
    friend class pkgAcquire::Worker;
 
    /** \brief dpointer placeholder (for later in case we need it) */
-   void *d;
+   void * const d;
 
    /** \brief The next queue in the pkgAcquire object's list of queues. */
    Queue *Next;
@@ -596,7 +596,7 @@ class pkgAcquire::Queue
 class pkgAcquire::UriIterator
 {
    /** \brief dpointer placeholder (for later in case we need it) */
-   void *d;
+   void * const d;
 
    /** The next queue to iterate over. */
    pkgAcquire::Queue *CurQ;
@@ -633,7 +633,7 @@ class pkgAcquire::UriIterator
 struct pkgAcquire::MethodConfig
 {
    /** \brief dpointer placeholder (for later in case we need it) */
-   void *d;
+   void * const d;
    
    /** \brief The next link on the acquire method list.
     *
@@ -694,7 +694,7 @@ struct pkgAcquire::MethodConfig
 class pkgAcquireStatus
 {
    /** \brief dpointer placeholder (for later in case we need it) */
-   void *d;
+   void * const d;
 
    protected: