patch 8.2.4153: MS-Windows: Global IME is no longer supported

Problem:    MS-Windows: Global IME is no longer supported.
Solution:   Remove the Global IME implementation. (Ken Takata, closes #9562)

Filelist

@@ -549,12 +549,9 @@ SRC_DOS =	\
 		src/msvc2015.bat \
 		src/msys32.bat \
 		src/msys64.bat \
-		src/dimm.idl \
 		src/dlldata.c \
 		src/dosinst.c \
 		src/dosinst.h \
-		src/glbl_ime.cpp \
-		src/glbl_ime.h \
 		src/gui_dwrite.cpp \
 		src/gui_dwrite.h \
 		src/gui_w32.c \

runtime/doc/mbyte.txt

@@ -955,32 +955,11 @@ replace mode.
 The options 'iminsert', 'imsearch' and 'imcmdline' can be used to choose
 the different input methods or disable them temporarily.
 
-WHAT IS IME
-    IME is a part of East asian version Windows.  That helps you to input
-    multibyte character.  English and other language version Windows does not
-    have any IME.  (Also there is no need usually.) But there is one that
-    called Microsoft Global IME.  Global IME is a part of Internet Explorer
-    4.0 or above.  You can get more information about Global IME, at below
-    URL.
-
-WHAT IS GLOBAL IME					*global-ime*
-    Global IME makes capability to input Chinese, Japanese, and Korean text
-    into Vim buffer on any language version of Windows 98, Windows 95, and
-    Windows NT 4.0.
-    On Windows 2000 and XP it should work as well (without downloading).  On
-    Windows 2000 Professional, Global IME is built in, and the Input Locales
-    can be added through Control Panel/Regional Options/Input Locales.
-    Please see below URL for detail of Global IME.  You can also find various
-    language version of Global IME at same place.
-
-    - Global IME detailed information.
-	http://search.microsoft.com/results.aspx?q=global+ime
-
-    - Active Input Method Manager (Global IME)
+On Windows 9x and Windows NT 4.0 there was *global-ime* , but this is no
+longer supported.  You can still find documentation for Active Input Method
+Manager (Global IME) here:
 	http://msdn.microsoft.com/en-us/library/aa741221(v=VS.85).aspx
 
-    Support for Global IME is an experimental feature.
-
 NOTE: For IME to work you must make sure the input locales of your language
 are added to your system.  The exact location of this depends on the version
 of Windows you use.  For example, on my Windows 2000 box:

src/Make_mvc.mak

@@ -34,7 +34,6 @@
 #	IME support: IME=yes	(default is yes)
 #	  DYNAMIC_IME=[yes or no]  (to load the imm32.dll dynamically, default
 #	  is yes)
-#	Global IME support: GIME=yes (requires GUI=yes)
 #
 #	Terminal support: TERMINAL=yes (default is yes if FEATURES is HUGE)
 #	  Will also enable CHANNEL
@@ -898,11 +897,6 @@ IME_LIB = imm32.lib
 ! endif
 !endif
 
-!if "$(GIME)" == "yes"
-CFLAGS = $(CFLAGS) -DGLOBAL_IME
-OBJ = $(OBJ) $(OUTDIR)\dimm_i.obj $(OUTDIR)\glbl_ime.obj
-!endif
-
 !if "$(GUI)" == "yes"
 SUBSYSTEM = windows
 CFLAGS = $(CFLAGS) -DFEAT_GUI_MSWIN
@@ -1475,9 +1469,6 @@ clean: testclean
 	- if exist uninstall.exe del uninstall.exe
 	- if exist if_perl.c del if_perl.c
 	- if exist auto\if_perl.c del auto\if_perl.c
-	- if exist dimm.h del dimm.h
-	- if exist dimm_i.c del dimm_i.c
-	- if exist dimm.tlb del dimm.tlb
 	- if exist dosinst.exe del dosinst.exe
 	cd xxd
 	$(MAKE) /NOLOGO -f Make_mvc.mak clean
@@ -1893,13 +1884,6 @@ iid_ole.c if_ole.h vim.tlb: if_ole.idl
 	midl /nologo /error none /proxy nul /iid iid_ole.c /tlb vim.tlb \
 		/header if_ole.h if_ole.idl
 
-dimm.h dimm_i.c: dimm.idl
-	midl /nologo /error none /proxy nul dimm.idl
-
-$(OUTDIR)/dimm_i.obj: $(OUTDIR) dimm_i.c $(INCL)
-
-$(OUTDIR)/glbl_ime.obj:	$(OUTDIR) glbl_ime.cpp  dimm.h $(INCL)
-
 
 CCCTERM = $(CC) $(CFLAGS) -Ilibvterm/include -DINLINE="" \
 	-DVSNPRINTF=vim_vsnprintf \