RFR : 8196578 : enhance errno_to_string function in os.cpp with some additional errno texts from AIX 7.1

[Baesken, Matthias]

Hello , I enhanced  the  errno - to -  error-text mappings   in os.cpp   for a few errnos we find on AIX 7.1 .
Some of these added errnos are found as well on  Linux (e.g. SLES 11 / 12 ).

Could you please check and review ?

( btw. there is good cross platform  info about the errnos at    http://www.ioplex.com/~miallen/errcmp.html     )

Bug :

https://bugs.openjdk.java.net/browse/JDK-8196578

Webrev :

http://cr.openjdk.java.net/~mbaesken/webrevs/8196578/



Best regards, Matthias
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