Use fixed timestamp as an alternative of __DATE__ macro in jdk.jdi to make Windows build reproducible

Building of jdk-11 with

bash ./configure --with-boot-jdk=../boot-jdk/jdk-11 --with-hotspot-build-time="2022-06-7 10:57am" --with-extra-cflags="/experimental:deterministic" --with-extra-cxxflags="/experimental:deterministic"

causes the following errors

* For target support_native_jdk.jdi_libdt_shmem_shmemBase.obj:
shmemBase.c
./src/jdk.jdi/share/native/libdt_shmem/shmemBase.c(1051): error C2220: the following warning is treated as an error
./src/jdk.jdi/share/native/libdt_shmem/shmemBase.c(1051): warning C5048: Use of macro '__DATE__' may result in non-deterministic output
./src/jdk.jdi/share/native/libdt_shmem/shmemBase.c(1051): note: to simplify migration, consider the temporary use of /Wv:18 flag with the version of the compiler with which you used to build without warnings

The problem stays actual in the upstream in the case of debug builds