solver: make use of range constraints

CoinMP supports the MPS-style range constraints:

L row: lower <= expression <= upper
G row: lower <= expression <= upper
R row: lower <= expression <= upper

T

solver: make use of range constraints

CoinMP supports the MPS-style range constraints:

L row: lower <= expression <= upper
G row: lower <= expression <= upper
R row: lower <= expression <= upper

This makes possible through some trickery to reduce the number of equations,
which is useful for very big systems with many constraints.

The feature was assisted with AI (Code Copilot and ChatGPT).

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solver: Initial/current Calc solution

Use the Coin methods to store the initial values based on the spreadsheet.
These can be a useful optimization for Calc, especially for repeated Solver
runs wher

solver: Initial/current Calc solution

Use the Coin methods to store the initial values based on the spreadsheet.
These can be a useful optimization for Calc, especially for repeated Solver
runs where the user changes one input and runs Solver again.

Developed with help from AI (ChatGPT and Code Copilot)

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Win10 msvc trunk (#498)

Build trunk on Windows with a modern MSVC

configure.ac required VS2008, but the bundled dependencies had moved past
what VC9 can compile -- boost 1.84 needs C++11, Python 3.

Win10 msvc trunk (#498)

Build trunk on Windows with a modern MSVC

configure.ac required VS2008, but the bundled dependencies had moved past
what VC9 can compile -- boost 1.84 needs C++11, Python 3.11 needs VS2017 or
newer -- so the configured compiler could not build the configured
dependencies, and no combination of the two worked. Every other platform had
already moved; Windows was the one left pinned.

This branch accepts a VS2015-or-newer toolset and the Windows 10 SDK, then
fixes what a modern compiler and SDK find: export lists, entry points, CRT
and manifest handling, and source conformance across the tree. Every
dependency builds, including Python, which trunk has never built on Windows
at all. The CLI/.NET binding is ported from Managed C++ to C++/CLI and its
bridgetest passes.

configure, bootstrap and build.pl now run to completion, and
instsetoo_native produces openoffice450.msi and openoffice450sdk.msi.

coinMp has been updated to the latest Version.

What this does not claim: the office has not been started, and
testtools/source/bridgetest still fails getCaughtException() in the x86 C++
bridge. Python is built without _ssl, _ctypes, _bz2, _lzma and _sqlite3, and
Platform SDK v7.0 is still required alongside the Windows 10 SDK. No other
platform's build is changed.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01UWgzQY2r1XwFvgeLPFWPsi

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