Implement -v (verbose) option for pull methods other than local transport.

This moves the private "say()" function to pull.c, renames it to
"pull_say()", and introduces a global variable "get_verbosely" that
makes the pull backends report what they fetch.  The -v option is
added to git-rpull and git-http-pull to match git-local-pull.

The documentation is updated to describe these pull commands.

Signed-off-by: Junio C Hamano <junkio@cox.net>

pull.h

@@ -13,6 +13,12 @@ extern int get_history;
 /** Set to fetch the trees in the commit history. **/
 extern int get_all;
 
+/* Set to be verbose */
+extern int get_verbosely;
+
+/* Report what we got under get_verbosely */
+extern void pull_say(const char *, const char *);
+
 extern int pull(char *target);
 
 #endif /* PULL_H */