the list of shell builtins. Both of these are needed for the compat
mode where make directly executes commands if the command line contains
neither a shell meta character nor a shell builtin. The list of builtins
is not changed, but csh has '@' added as a meta-character.
Initialize the default shell by parsing a string as one would specify
to the .SHELL target. So we get rid of the CShell clone of struct Shell which
just contained const char * where struct Shell had char *.
Add a debugging function for dumping a parsed shell description to
stdout.
a22057198a