pidgin/pidgin

922c9e70900c
Rename protocol.[ch] to purpleprotocol.[ch]

Testing Done:
Connected an XMPP account.

Reviewed at https://reviews.imfreedom.org/r/1114/
libpurple/data/purple-url-handler.desktop.in
libpurple/protocols/null/nullprpl.c
pidgin/data/im.pidgin.Pidgin.desktop.in
sub/libpurple/data/purple-url-handler.desktop.in
sub/libpurple/protocols/null/nullprpl.c
sub/pidgin/data/im.pidgin.Pidgin.desktop.in