Merge pull request #11871 from murgatroid99/uv_portability_fix

BUILD

build.yaml

gRPC-Core.podspec

grpc.gemspec

package.xml

src/core/lib/iomgr/iomgr_uv.c

src/core/lib/iomgr/iomgr_uv.h

src/core/lib/iomgr/pollset_uv.c

src/core/lib/iomgr/resolve_address_uv.c

src/core/lib/iomgr/tcp_client_uv.c

src/core/lib/iomgr/tcp_server_uv.c

src/core/lib/iomgr/tcp_uv.c

src/core/lib/iomgr/timer_uv.c

tools/doxygen/Doxyfile.core.internal

tools/run_tests/generated/sources_and_headers.json

tools/run_tests/generated/tests.json

tools/run_tests/run_tests.py

vsprojects/vcxproj/grpc/grpc.vcxproj

vsprojects/vcxproj/grpc/grpc.vcxproj.filters

vsprojects/vcxproj/grpc_test_util/grpc_test_util.vcxproj