makefiles: Use the -m16 option with 16-bit resources for consistency.

dlls/display.drv16/Makefile.in

@@ -2,7 +2,7 @@ MODULE    = display.drv16
 IMPORTS   = user32
 
 EXTRADLLFLAGS = -m16
-EXTRARCFLAGS  = -O res16
+EXTRARCFLAGS  = -m16
 
 C_SRCS = display.c
 

dlls/gdi.exe16/Makefile.in

@@ -2,7 +2,7 @@ MODULE    = gdi.exe16
 IMPORTS   = user32 advapi32 gdi32
 
 EXTRADLLFLAGS = -m16 -Wb,--main-module,gdi32.dll,--heap,65520
-EXTRARCFLAGS  = -O res16
+EXTRARCFLAGS  = -m16
 
 C_SRCS = \
 	bidi.c \

dlls/krnl386.exe16/Makefile.in

@@ -4,7 +4,7 @@ IMPORTS   = winecrt0 kernel32 ntdll
 DELAYIMPORTS = ddraw dsound user32
 EXTRAIMPLIBFLAGS = -m16
 EXTRADLLFLAGS = -m16 -nodefaultlibs -Wb,--dll-name,kernel
-EXTRARCFLAGS  = -O res16
+EXTRARCFLAGS  = -m16
 
 C_SRCS = \
 	atom.c \

dlls/mouse.drv16/Makefile.in

@@ -2,7 +2,7 @@ MODULE    = mouse.drv16
 IMPORTS   = user32
 
 EXTRADLLFLAGS = -m16
-EXTRARCFLAGS  = -O res16
+EXTRARCFLAGS  = -m16
 
 C_SRCS = mouse.c
 

dlls/ole2nls.dll16/Makefile.in

 MODULE    = ole2nls.dll16
 
 EXTRADLLFLAGS = -m16 -Wb,--main-module,ole32.dll
-EXTRARCFLAGS  = -O res16
+EXTRARCFLAGS  = -m16
 
 C_SRCS = ole2nls.c
 

dlls/shell.dll16/Makefile.in

@@ -2,7 +2,7 @@ MODULE    = shell.dll16
 IMPORTS   = shell32 user32 gdi32 advapi32
 
 EXTRADLLFLAGS = -m16 -Wb,--main-module,shell32.dll
-EXTRARCFLAGS  = -O res16
+EXTRARCFLAGS  = -m16
 
 C_SRCS = shell.c
 

dlls/user.exe16/Makefile.in

 MODULE    = user.exe16
 IMPORTS   = mpr user32 gdi32
 EXTRADLLFLAGS = -m16 -Wb,--main-module,user32.dll,--heap,65520
-EXTRARCFLAGS  = -O res16
+EXTRARCFLAGS  = -m16
 
 C_SRCS = \
 	bidi.c \