8207744: Clean up inconsistent use of opendir/closedir versus opendir64/closedir64

src/java.base/share/native/libjli/wildcard.c

src/java.base/unix/native/libjava/ProcessHandleImpl_unix.c

src/java.base/unix/native/libjava/TimeZone_md.c

src/java.base/unix/native/libjava/UnixFileSystem_md.c

src/java.base/unix/native/libjava/childproc.c

src/java.base/unix/native/libnio/fs/UnixNativeDispatcher.c

...ement/unix/native/libmanagement_ext/OperatingSystemImpl.c