platform constants for Java

 Java Native Runtime (JNR) is a collection of Java libraries to make
 interfacing with OS-level features easier. JNR uses an alternate
 method to JNI or JNA to achieve programming simplicity while still
 retaining performance.
 .
 The upstream version of this package is now also known as jnr-constants.
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 The jnr-constants package gives Java programs access to platform-level
 constants, for example errno values.