Description:
------------
When /usr/ucb/expr (one of four stock exprs in Solaris 10) is the first expr in $PATH, I get a configuration error when configuring php 5.2.5

If I change $PATH so that any other expr is first, configure proceeds as expected.

Reproduce code:
---------------
The code in the configure script that causes this is:

  if test `expr -- $0 : "'.*"` = 0; then
    CONFIGURE_COMMAND="$CONFIGURE_COMMAND '$0'"
  else
    CONFIGURE_COMMAND="$CONFIGURE_COMMAND $0"
  fi

With /usr/ucb/expr, the expression evaluates to nothing.  With any other expr on the system, it evaluates to 0.

Expected result:
----------------
I expect to see the configure script run to successful completion.  This happens with any other stock Solaris 10 expr (/usr/bin/expr, /usr/xpg4/bin/expr, /usr/xpg6/bin/expr) or GNU coreutils expr.

Actual result:
--------------
With the stock expr from /usr/ucb on Solaris 10, I get this result:

./configure --prefix=/usr/local/package --oldincludedir=/usr/local/package/include --enable-mod-charset --with-apxs2 --enable-fastcgi --with-openssl --with-zlib --with-bz2 --with-curl --with-gdbm --with-db4 --with-gd --with-gettext --with-gmp --with-ldap --with-ldap-sasl --with-mysql --with-ncurses --with-pdo-mysql --with-snmp --enable-ucd-snmp-hack --enable-soap --enable-sockets --enable-sqlite-utf8 --with-xsl --enable-zip
loading cache ./config.cache
checking for Cygwin environment... no
checking for mingw32 environment... no
checking for egrep... grep -E
checking for a sed that does not truncate output... /usr/local/bin/sed
expr: syntax error
./configure: test: argument expected