[Ohrrpgce] SVN: teeemcee/13455 blackbox: swap joy A/B buttons for Use/Cancel if "asiabuttons" env key i

[subversion at HamsterRepublic.com]

teeemcee
2023-12-30 21:15:32 -0800 (Sat, 30 Dec 2023)
151
blackbox: swap joy A/B buttons for Use/Cancel if "asiabuttons" env key is set.

Added "read_environment_key" (split out of "read environment" command).
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U   wip/allmodex.bas
U   wip/allmodex.bi
U   wip/scriptcommands.bas