Log message: *: recursive bump for perl 5.34 

Log message: regress/tools: reduce the number of backslashes in the code 

Log message: regress/tools: adjust COMMENT 

Log message: regress: move tests for platform tools to tools-platform 

Log message: mk/tools: in the wrapper log, quote arguments containing = naturally 

Log message: mk/tools: correctly quote arguments in the tool wrapper log Before, the tool arguments were written to the log as plain strings. Now the arguments are properly quoted, which makes it possible to replay the commands by copying them from the .work.log file. This only affects tools that are shell builtins (echo, true, false), get additional arguments (mkdir -p) or define a custom TOOLS_SCRIPT (pkg-config, to set an environment variable; or autotools). Tools that are symlinked to the real tool are not affected. The calls to the compiler are already properly logged since cwrappers takes care of that. This commit therefore makes the log entries for the compilers and the other tools more similar. 

Log message: mk/tools: fix quoting when logging tool invocations When a package or the infrastructure defined a tool with custom TOOLS_ARGS or TOOLS_SCRIPT containing special characters, these could lead to unintuitive interactions at the time when that tool invocation was logged in the tool wrapper log. Some of the logging output ended up on stdout, while some of the normal output ended up in the log, and parts of the quoted arguments were even evaluated as shell commands. The logging of the wrapped tool commands is not perfect yet, but at least it's much more predictable now. 

Log message: regress/tools: show that TOOLS_SCRIPT is not always logged properly