Fix backward compatiblity of the new pkgAcquireMethod::DropPrivsOrDie()

Do not drop privileges in the methods when using a older version of
libapt that does not support the chown magic in partial/ yet. To
do this DropPrivileges() now will ignore a empty Apt::Sandbox::User.

Cleanup all hardcoded _apt along the way.

1 files changed, 2 insertions, 0 deletions

diff --git a/methods/https.h b/methods/https.h
index 0387cb9b5..9df18e83a 100644
--- a/methods/https.h
+++ b/methods/https.h
@@ -58,6 +58,8 @@ class HttpsMethod : public pkgAcqMethod
    static const int DL_MIN_SPEED = 10;
 
    virtual bool Fetch(FetchItem *);
+   virtual bool Configuration(std::string Message);
+
    static size_t parse_header(void *buffer, size_t size, size_t nmemb, void *userp);
    static size_t write_data(void *buffer, size_t size, size_t nmemb, void *userp);
    static int progress_callback(void *clientp, double dltotal, double dlnow,