Help: Add INTERFACE_LIBRARY to TYPE target property documentation
Merge branch 'doc-INTERFACE-target-type' into release
bootstrap: Fix syntax for Solaris 10 shell (#15317)

In commit v3.1.0-rc2~7^2 (Workaround for short jump tables on PA-RISC,
2014-11-04) we added use of shell syntax not supported on the Solaris
shell.  Avoid using the '!' operator.

Reported-by: Friedrich Haubensak <hsk@imb-jena.de>
Merge branch 'bootstrap-solaris' into release
Help: Clarify MinGW v. MSYS Makefiles generators (#15319)

Explain the usage of each generator more clearly and reference each as
an alternative to the other.

Suggested-by: Craig Hicks <hicks111@hotmail.com>
Merge branch 'doc-mingw-makefiles' into release