pidgin/pidgin

rename conversation.[ch] to purpleconversation.[ch] and split PurpleConversationUiOps out to its own file to avoid circular include issues.

2021-04-12, Gary Kramlich
d3518ff99fa7
rename conversation.[ch] to purpleconversation.[ch] and split PurpleConversationUiOps out to its own file to avoid circular include issues.

Testing Done:
Compiled and ran locally including docs and pot file. The pot file fails as I need to rebase on [596](https://reviews.imfreedom.org/r/596/)

Reviewed at https://reviews.imfreedom.org/r/597/
if ENABLE_DOC
subdir('reference')
endif
if ENABLE_GTK
pidgin_man = configure_file(
input : 'pidgin3.1.in',
output : 'pidgin3.1',
configuration : man_conf,
install : true,
install_dir : get_option('mandir') / 'man1')
endif
if enable_consoleui
finch_man = configure_file(
input : 'finch3.1.in',
output : 'finch3.1',
configuration : man_conf,
install : true,
install_dir : get_option('mandir') / 'man1')
endif