pidgin/pidgin

Fix a number of issues with the windows build
release-2.x.y
2021-04-05, Gary Kramlich
0611c060a02c
Fix a number of issues with the windows build

* Standardize on wprintf in pidgin/win32/winpidgin.c
* Use the inetc nsis plugin that supports https
* If building under msys2 copy libgcc_s_dw2-1.dll and libwinpthread to the
install directory.

Testing Done:
Ran successfully from the

* install directory
* online installer
* offline installer
* portable zip file

Reviewed at https://reviews.imfreedom.org/r/593/
EXTRA_DIST = \
Makefile.mingw \
README
pkgdir = $(libdir)/purple-$(PURPLE_MAJOR_VERSION)
NULLSOURCES = nullprpl.c
AM_CFLAGS = $(st)
libnull_la_LDFLAGS = -module -avoid-version
# nullprpl isn't built by default. when it is built, it's dynamically linked.
st =
pkg_LTLIBRARIES = libnull.la
libnull_la_SOURCES = $(NULLSOURCES)
libnull_la_LIBADD = $(GLIB_LIBS)
AM_CPPFLAGS = \
-I$(top_srcdir)/libpurple \
-I$(top_builddir)/libpurple \
$(GLIB_CFLAGS) \
$(DEBUG_CFLAGS)