Merge pull request #1370 from zeliard/master

src/core/support/alloc.c

src/core/support/time_win32.c

templates/vsprojects/grpc.sln.template

templates/vsprojects/vcxproj_defs.include

test/core/util/port_windows.c

vsprojects/gpr/gpr.vcxproj

vsprojects/gpr_test_util/gpr_test_util.vcxproj

vsprojects/grpc++/grpc++.vcxproj

vsprojects/grpc.sln

vsprojects/grpc/grpc.vcxproj

vsprojects/grpc_csharp_ext/grpc_csharp_ext.vcxproj

vsprojects/grpc_test_util/grpc_test_util.vcxproj

...s/grpc_test_util_unsecure/grpc_test_util_unsecure.vcxproj

vsprojects/grpc_unsecure/grpc_unsecure.vcxproj