fix two bugs in sed code configure uses to save command line
one place where semicolon (non-portable) was still used in place of
separate -e options (copied over from an old version of this code),
and use of a literal slash in the bracket expression for the final
command, despite slash being used as the delimiter for the s command.
diff --git a/configure b/configure
index dfd3d50..469b7d2 100755
--- a/configure
+++ b/configure
@@ -49,7 +49,7 @@
tr '\n' ' ' <<EOF | grep '^[-[:alnum:]_=,./:]* $' >/dev/null 2>&1 && { echo "$1" ; return 0 ; }
$1
EOF
-printf %s\\n "$1" | sed -e "s/'/'\\\\''/g" -e "1s/^/'/;\$s/\$/'/" -e "s/^'\([-[:alnum:]_,./:]*\)=\(.*\)\$/\1='\2/"
+printf %s\\n "$1" | sed -e "s/'/'\\\\''/g" -e "1s/^/'/" -e "\$s/\$/'/" -e "s#^'\([-[:alnum:]_,./:]*\)=\(.*\)\$#\1='\2#"
}
echo () { printf "%s\n" "$*" ; }
fail () { echo "$*" ; exit 1 ; }