RFR: 8238161: use os::fopen in HS code where possible

[Harold Seigel]

On Tue, 11 Jan 2022 21:22:11 GMT, Coleen Phillimore <coleenp at openjdk.org> wrote:

>> I assume that you are going to add the pragma forbid function for fopen after this in 8214976 ?
Yes,

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PR: https://git.openjdk.java.net/jdk/pull/7022