Update comments dealing with pkgext/dbext stripping

pacman/callback.c already did the work I set out to do with this commit, so
update the comments accordingly in the frontend and backend.

Signed-off-by: Dan McGee <dan@archlinux.org>

lib/libalpm/server.c

@@ -193,8 +193,7 @@ int _alpm_downloadfiles_forreal(alpm_list_t *servers, const char *localpath,
 				return(-1);
 			}
 
-			/* use the raw filename for download progress */
-			/* TODO maybe strip the normal pkg.tar.gz extension? */
+			/* pass the raw filename for passing to the callback function */
 			strncpy(pkgname, fn, PKG_NAME_LEN);
 			_alpm_log(PM_LOG_DEBUG, "using '%s' for download progress\n", pkgname);
 

src/pacman/callback.c

@@ -532,8 +532,7 @@ void cb_dl_progress(const char *filename, int xfered, int total)
 	eta_s -= eta_m * 60;
 
 	fname = strdup(filename);
-	/* strip extension if it's there
-	 * NOTE: in the case of package files, only the pkgname is sent now */
+	/* strip package or DB extension for cleaner look */
 	if((p = strstr(fname, PKGEXT)) || (p = strstr(fname, DBEXT))) {
 			*p = '\0';
 	}