Add Xpress direct and persistent solver interfaces#3987

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XPRSc4v4 wants to merge 6 commits into

Commits on Jan 23, 2026

Merge branch 'main' of https://github.com/Pyomo/pyomo
XPRSc4v4
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Commits on Apr 29, 2026

Merge remote-tracking branch 'upstream/main'
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Commits on May 11, 2026

Merge branch 'main' of https://github.com/Pyomo/pyomo
XPRSc4v4
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Commits on Jun 30, 2026