libmwaw: drop dep. on boost

Change-Id: If3bce409a98b9593920c41f8e18b82e8daa36fb1

external/libmwaw/ExternalProject_libmwaw.mk

@@ -16,7 +16,6 @@ $(eval $(call gb_ExternalProject_register_targets,libmwaw,\
 ))
 
 $(eval $(call gb_ExternalProject_use_externals,libmwaw,\
-	boost_headers \
 	revenge \
 ))
 
@@ -30,15 +29,14 @@ $(call gb_ExternalProject_get_state_target,libmwaw,build) :
 			, \
 				--enable-shared --disable-static \
 			) \
+			--with-sharedptr=c++11 \
 			--without-docs \
 			--disable-tools \
 			--disable-zip \
 			$(if $(ENABLE_DEBUG),--enable-debug,--disable-debug) \
 			$(if $(verbose),--disable-silent-rules,--enable-silent-rules) \
 			--disable-werror \
-			CXXFLAGS="$(if $(SYSTEM_BOOST),$(BOOST_CPPFLAGS),\
-				$(if $(COM_GCC_IS_CLANG),-Qunused-arguments) \
-				-I$(call gb_UnpackedTarball_get_dir,boost))" \
+			CXXFLAGS="$(CXXFLAGS_CXX11)" \
 			$(if $(filter LINUX,$(OS)),$(if $(SYSTEM_REVENGE),, \
 				'LDFLAGS=-Wl$(COMMA)-z$(COMMA)origin \
 					-Wl$(COMMA)-rpath$(COMMA)\$$$$ORIGIN')) \

external/libmwaw/Library_mwaw.mk

@@ -13,7 +13,6 @@ $(eval $(call gb_Library_use_unpacked,mwaw,libmwaw))
 
 $(eval $(call gb_Library_use_externals,mwaw,\
     revenge \
-    boost_headers \
 ))
 
 $(eval $(call gb_Library_set_warnings_not_errors,mwaw))
@@ -24,10 +23,10 @@ $(eval $(call gb_Library_set_include,mwaw,\
 ))
 
 $(eval $(call gb_Library_add_defs,mwaw,\
-	-DBOOST_ALL_NO_LIB \
 	-DBUILD_MWAW \
 	-DNDEBUG \
 	-D_WINDLL \
+	-DSHAREDPTR_STD \
 ))
 
 $(eval $(call gb_Library_add_generated_exception_objects,mwaw,\