gawk: Remove References to /usr/local/bin/gawk

Also replace the hashbangs using /bin/gawk to use
${bindir}/gawk

This fixes issues such as
https://github.com/riscv/meta-riscv/issues/384

(From OE-Core rev: 64ae7492c69599019ef2bec62a834335539908ef)

Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
(cherry picked from commit 9f58ad97f6587322b716de1c9dc409bb4e1376f0)
Signed-off-by: Steve Sakoman <steve@sakoman.com>

meta/recipes-extended/gawk/gawk_5.3.0.bb

@@ -52,6 +52,8 @@ do_install_ptest() {
 		cp ${S}/test/$i* ${D}${PTEST_PATH}/test
 	done
 	sed -i \
+	    -e 's|#! /bin/gawk|#! ${bindir}/gawk|g' \
+	    -e 's|#! /usr/local/bin/gawk|#! ${bindir}/gawk|g' \
 	    -e 's|#!${base_bindir}/awk|#!${bindir}/awk|g' ${D}${PTEST_PATH}/test/*.awk
 
 	sed -i -e "s|GAWKLOCALE|LANG|g" ${D}${PTEST_PATH}/test/Maketests