pgsql: Treat MINGW and MSYS the same in pg_upgrade test script

Treat MINGW and MSYS the same in pg_upgrade test script On msys2, 'uname -s' reports a string starting MSYS instead on MINGW as happens on msys1. Treat these both the same way. This reverts 608a710195a4b in favor of a more general solution. Backpatch to all live branches. Branch -- master D

pgsql: Treat MINGW and MSYS the same in pg_upgrade test script

Treat MINGW and MSYS the same in pg_upgrade test script On msys2, 'uname -s' reports a string starting MSYS instead on MINGW as happens on msys1. Treat these both the same way. This reverts 608a710195a4b in favor of a more general solution. Backpatch to all live branches. Branch -- REL_11_ST

pgsql: Treat MINGW and MSYS the same in pg_upgrade test script

Treat MINGW and MSYS the same in pg_upgrade test script On msys2, 'uname -s' reports a string starting MSYS instead on MINGW as happens on msys1. Treat these both the same way. This reverts 608a710195a4b in favor of a more general solution. Backpatch to all live branches. Branch -- REL9_4_ST

pgsql: Treat MINGW and MSYS the same in pg_upgrade test script

Treat MINGW and MSYS the same in pg_upgrade test script On msys2, 'uname -s' reports a string starting MSYS instead on MINGW as happens on msys1. Treat these both the same way. This reverts 608a710195a4b in favor of a more general solution. Backpatch to all live branches. Branch -- REL9_5_ST

pgsql: Treat MINGW and MSYS the same in pg_upgrade test script

Treat MINGW and MSYS the same in pg_upgrade test script On msys2, 'uname -s' reports a string starting MSYS instead on MINGW as happens on msys1. Treat these both the same way. This reverts 608a710195a4b in favor of a more general solution. Backpatch to all live branches. Branch -- REL9_6_ST

pgsql: Treat MINGW and MSYS the same in pg_upgrade test script

Treat MINGW and MSYS the same in pg_upgrade test script On msys2, 'uname -s' reports a string starting MSYS instead on MINGW as happens on msys1. Treat these both the same way. This reverts 608a710195a4b in favor of a more general solution. Backpatch to all live branches. Branch -- REL_10_ST

pgsql: Treat MINGW and MSYS the same in pg_upgrade test script

Treat MINGW and MSYS the same in pg_upgrade test script On msys2, 'uname -s' reports a string starting MSYS instead on MINGW as happens on msys1. Treat these both the same way. This reverts 608a710195a4b in favor of a more general solution. Backpatch to all live branches. Branch -- REL_12_ST