Tighten environment variable display when ridk enable

[YO4]

before

C:\>ridk enable

C:\>set "RI_DEVKIT=C:\msys64"

C:\>set "MSYSTEM=UCRT64"

C:\>set "PKG_CONFIG_PATH=/ucrt64/lib/pkgconfig:/ucrt64/share/pkgconfig"

C:\>set "ACLOCAL_PATH=/ucrt64/share/aclocal:/usr/share/aclocal"

C:\>set "MANPATH=/ucrt64/share/man"

C:\>set "MINGW_PACKAGE_PREFIX=mingw-w64-ucrt-x86_64"

C:\>set "MSYSTEM_PREFIX=/ucrt64"

C:\>set "MSYSTEM_CARCH=x86_64"

C:\>set "MSYSTEM_CHOST=x86_64-w64-mingw32"

C:\>set "MINGW_CHOST=x86_64-w64-mingw32"

C:\>set "MINGW_PREFIX=/ucrt64"

C:\>set "LANG=ja_JP.UTF-8"

C:\>

after

C:\>r:\ridk enable
RI_DEVKIT=C:\msys64
MSYSTEM=UCRT64
PKG_CONFIG_PATH=/ucrt64/lib/pkgconfig:/ucrt64/share/pkgconfig
ACLOCAL_PATH=/ucrt64/share/aclocal:/usr/share/aclocal
MANPATH=/ucrt64/share/man
MINGW_PACKAGE_PREFIX=mingw-w64-ucrt-x86_64
MSYSTEM_PREFIX=/ucrt64
MSYSTEM_CARCH=x86_64
MSYSTEM_CHOST=x86_64-w64-mingw32
MINGW_CHOST=x86_64-w64-mingw32
MINGW_PREFIX=/ucrt64
LANG=ja_JP.UTF-8
C:\>

[larskanis]

Nice, looks good!