Updated IFX_VERSION entry to work with new Version output of ESQL/C

@- Updated IFX_VERSION entry to work with new Version output of ESQL/C (Corne')

ext/informix/config.m4

@@ -44,7 +44,7 @@ if test "$PHP_INFORMIX" != "no"; then
   esac
 
   AC_MSG_CHECKING([Informix version])
-  IFX_VERSION=[`$INFORMIXDIR/bin/esql -V | sed -ne '1 s/^.*Version \([0-9]\)\.\([0-9]*\).*$/\1\2/p'`]
+  IFX_VERSION=[`$INFORMIXDIR/bin/esql -V | grep "ESQL Version" | sed -ne '1 s/\(.*\)ESQL Version \([0-9]\)\.\([0-9]*\).*/\2\3/p'`]
   AC_MSG_RESULT($IFX_VERSION)
   AC_DEFINE_UNQUOTED(IFX_VERSION, $IFX_VERSION, [ ])