[bug-gawk] gawk-4.0.0b has Linuxism (bash / ksh / zsh extension)

[Nelson H. F. Beebe]

Builds on non-Linux systems of gawk-4.0.0b failed.  On Solaris
Intel, the reason is this:

    % cd test

    % cat _beginfile2
    --Test 1a--
    ./beginfile2.sh: syntax error at line 16: `prog=$' unexpected

    % sed -n 16p beginfile2.sh
    prog=$($AWK '/#TEST1#/, /#TEST2#/' $AWKPROG)

That syntax does not belong in /bin/sh scripts.  Please fix.

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- Nelson H. F. Beebe                    Tel: +1 801 581 5254                  -
- University of Utah                    FAX: +1 801 581 4148                  -
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