builds: Fix introspection with MSVC builds

For building the introspection dumper program on Visual Studio, leave out
the G_LOG_DOMAIN as g-ir-scanner does not like it when it constructs the
compiler command line for Visual Studio.

Also ensure that we are looking for the freshly-built libraries by looking
for the .lib's from the output directories of the Visual Studio project files.

build/Makefile.msvc-introspection

@@ -109,6 +109,7 @@ $(top_builddir)/build/win32/$(1).msvc.introspect:
 	echo '	--cflags-end	\'>>$(top_builddir)/build/win32/$(1).msvc.introspect
 	echo '	'$($(_gir_name)_MSVC_SCANNERFLAGS)'	\'>>$(top_builddir)/build/win32/$(1).msvc.introspect
 	echo '	--filelist='$(_gir_name)'_list	\'>>$(top_builddir)/build/win32/$(1).msvc.introspect
+	echo '	-L.\vs$$$$(VSVER)\$$$$(CFG)\$$$$(PLAT)\bin	\'>>$(top_builddir)/build/win32/$(1).msvc.introspect
 	echo '	-o $$$$@'>>$(top_builddir)/build/win32/$(1).msvc.introspect
 	echo '' >>$(top_builddir)/build/win32/$(1).msvc.introspect
 

gdk/Makefile.am

@@ -34,12 +34,12 @@ EXTRA_DIST += 			\
 	gdkversionmacros.h.in
 
 GDK_CFLAGS_DEFINES =	\
-	-DG_LOG_DOMAIN=\"Gdk\"		\
 	-DG_LOG_USE_STRUCTURED=1	\
 	-DGDK_COMPILATION
 
 
 AM_CPPFLAGS =				\
+	-DG_LOG_DOMAIN=\"Gdk\"		\
 	$(GDK_CFLAGS_DEFINES)		\
 	-I$(top_builddir)		\
 	-I$(top_builddir)/gdk		\

gtk/Makefile.am

@@ -3,7 +3,6 @@ AUTOMAKE_OPTIONS = subdir-objects
 include $(top_srcdir)/Makefile.decl
 
 GTK_BASE_CFLAGS_DEFINES =				\
-	-DG_LOG_DOMAIN=\"Gtk\"				\
 	-DG_LOG_USE_STRUCTURED=1			\
 	-DGTK_VERSION=\"$(GTK_VERSION)\"		\
 	-DGTK_BINARY_VERSION=\"$(GTK_BINARY_VERSION)\"	\
@@ -20,6 +19,7 @@ GTK_PLAT_CFLAGS_DEFINES =				\
 	-DGTK_PRINT_BACKENDS=\"$(GTK_PRINT_BACKENDS)\"
 
 AM_CPPFLAGS =						\
+	-DG_LOG_DOMAIN=\"Gtk\"				\
 	$(GTK_BASE_CFLAGS_DEFINES)			\
 	$(GTK_PLAT_CFLAGS_DEFINES)			\
 	-DX11_DATA_PREFIX=\"$(X11_PREFIX)\"		\