Update ICU to 54.1 step 1

source/config/mh-cygwin64

 ## -*-makefile-*-
-## Cygwin-specific setup
-## Copyright (c) 2001-2010, International Business Machines Corporation and
+## Cygwin64-specific setup
+## Copyright (c) 2014, International Business Machines Corporation and
 ## others. All Rights Reserved.
 
 ## Commands to generate dependency files
 GEN_DEPS.c=     $(CC) -E -MM $(DEFS) $(CPPFLAGS)
 GEN_DEPS.cc=    $(CXX) -E -MM $(DEFS) $(CPPFLAGS)
 
 ## Flags to create/use a static library
 ifneq ($(ENABLE_SHARED),YES)
 ## Make sure that the static libraries can be built and used
 CPPFLAGS += -DU_STATIC_IMPLEMENTATION
@@ skipping 95 matching lines @@
 # LDflags that pkgdata will use
 BIR_LDFLAGS= -Wl,-Bsymbolic
 
 # Dependencies [i.e. map files] for the final library
 BIR_DEPS=
 
 # Environment variable to set a runtime search path
 LDLIBRARYPATH_ENVVAR = PATH
 
 # The type of assembly to write for generating an object file
-GENCCODE_ASSEMBLY=-a gcc-cygwin
+GENCCODE_ASSEMBLY=-a gcc-mingw64
 
 # put this here again so it gets cyguc...
 
 #SH#ICULIBS_COMMON_LIB_NAME="${LIBICU}uc${ICULIBSUFFIX}${ICULIBSUFFIX_VERSION}.${SO}"
 
 # for icu-config
 
 #SH### copied from Makefile.inc
 #SH#ICULIBS_COMMON="-l${LIBICU}uc${ICULIBSUFFIX}${ICULIBSUFFIX_VERSION}"
 #SH#ICULIBS_DATA="-l${LIBICU}${DATA_STUBNAME}${ICULIBSUFFIX}${ICULIBSUFFIX_VERSION}"
 #SH#ICULIBS_I18N="-l${LIBICU}${I18N_STUBNAME}${ICULIBSUFFIX}${ICULIBSUFFIX_VERSION}"
 #SH#ICULIBS_TOOLUTIL="-l${LIBICU}tu${ICULIBSUFFIX}${ICULIBSUFFIX_VERSION}"
 #SH#ICULIBS_CTESTFW="-l${LIBICU}ctestfw${ICULIBSUFFIX}${ICULIBSUFFIX_VERSION}"
 #SH#ICULIBS_ICUIO="-l${LIBICU}io${ICULIBSUFFIX}${ICULIBSUFFIX_VERSION}"
 #SH#ICULIBS_OBSOLETE="-l${LIBICU}obsolete${ICULIBSUFFIX}${ICULIBSUFFIX_VERSION}"
 #SH#ICULIBS_LAYOUT="-l${LIBICU}le${ICULIBSUFFIX}${ICULIBSUFFIX_VERSION}"
 #SH#ICULIBS_LAYOUTEX="-l${LIBICU}lx${ICULIBSUFFIX}${ICULIBSUFFIX_VERSION}"
 #SH#ICULIBS_BASE="${LIBS} -L${libdir}"
 #SH#ICULIBS="${ICULIBS_BASE} ${ICULIBS_I18N} ${ICULIBS_COMMON} ${ICULIBS_DATA}" 
 
 ## End Cygwin-specific setup