pidgin/pidgin

Make our windows builds usable from meson.
release-2.x.y
2021-04-19, Gary Kramlich
2ff89178eb3d
Make our windows builds usable from meson.

This creates our pkg-config files on windows as well as fixes an include in
pidgin.h which can cause some issues.

This isn't usable as is, as you need a machine-file and a pkg-config wrapper
to make this all work, but that will be updated in the win32-dev.7z file thats
on data.imfreedom.org.

Testing Done:
Compiled guifications2 (which now uses meson) on windows and verified it works.

Reviewed at https://reviews.imfreedom.org/r/615/
#ifndef DBUS_API_SUBJECT_TO_CHANGE
#define DBUS_API_SUBJECT_TO_CHANGE
#endif
#include <stdio.h>
#include <stdlib.h>
#include "purple-client.h"
/*
This example demonstrates how to use libpurple-client to communicate
with purple. The names and signatures of functions provided by
libpurple-client are the same as those in purple. However, all
structures (such as PurpleAccount) are opaque, that is, you can only
use pointer to them. In fact, these pointers DO NOT actually point
to anything, they are just integer identifiers of assigned to these
structures by purple. So NEVER try to dereference these pointers.
Integer ids as disguised as pointers to provide type checking and
prevent mistakes such as passing an id of PurpleAccount when an id of
PurpleBuddy is expected. According to glib manual, this technique is
portable.
*/
int main (int argc, char **argv)
{
GList *alist, *node;
purple_init();
alist = purple_accounts_get_all();
for (node = alist; node != NULL; node = node->next)
{
PurpleAccount *account = (PurpleAccount*) node->data;
char *name = purple_account_get_username(account);
g_print("Name: %s\n", name);
g_free(name);
}
g_list_free(alist);
return 0;
}