bcc64x has a different compiler flag for enabling unicode

    * templates/bmakecommon.mpt:

templates/bmakecommon.mpt

@@ -10,7 +10,6 @@ conditional_include "common"
 
 configurations = Debug Release
 compilers = bcc32 bcc32c bcc64 bcc64x
-unicode_flags = -WU
 unicode_lib_modifier = u
 unicode_exe_modifier = u
 dll_ext = .dll
@@ -22,6 +21,7 @@ bcc32  {
 debug_flags = -v -y -Od -vi- -k
 release_flags =
 optimize_flags = -O1
+unicode_flags = -WU
 pdb_flags =
 warn_flags = -w-rvl -w-rch -w-ccc -w-obs -w-aus -w-pia -w-inl -w-mls
 stack_flag = /S:
@@ -52,6 +52,7 @@ bcc32c {
 debug_flags = -Od -vi-
 release_flags =
 optimize_flags = -O3
+unicode_flags = -WU
 pdb_flags =
 warn_flags =
 stack_flag = /S:
@@ -81,6 +82,7 @@ bcc64 {
 debug_flags = -g -O0
 release_flags =
 optimize_flags = -O3
+unicode_flags = -WU
 pdb_flags =
 warn_flags =
 stack_flag = /S:
@@ -110,6 +112,7 @@ bcc64x {
 debug_flags = -g -O0
 release_flags = -Wno-ignored-attributes
 optimize_flags = -O3
+unicode_flags = -tU
 pdb_flags = -Xlinker -pdb -Xlinker $(OUTPUTDIR:\=/)$(NAME).pdb
 warn_flags =
 stack_flag = -Xlinker --stack=