scripted-diff: Orthogonalize string quoting
scripted-diff: Orthogonalize string quoting

Add double qoutes to string tests where arguments could (theoretically)
contain spaces.

Remove double quotes where not necessary.

-BEGIN VERIFY SCRIPT-
sed -iE -e 's/"x\(yes\|no\|auto\)\?"/x\1/g' -e 's/test \(x\$[^ ]*\)/test "\1"/g' build-aux/m4/bitcoin_qt.m4
-END VERIFY SCRIPT-

chaincoin/chaincoin,chaincoin/chaincoin,chaincoin/chaincoin,chaincoin/chaincoin,chaincoin/chaincoin,chaincoin/chaincoin