Update configure script to be compatible with ptlib 2.10.9

With ptlib 2.10.9, the configure script fails due to grep returning multiple
matches for the pattern it searches for. This patch updates the pattern
matching to return only the actual version for the symbol searched for,
PTLIB_VERSION.

(closes issue ASTERISK-20980)
Reported by: Stefan Reuter
patches:
  ASTERISK-20980-1.patch uploaded by Stefan Reuter (license 5339)


git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.8@380297 65c4cc65-6c06-0410-ace0-fbb531ad65f3

autoconf/ast_check_pwlib.m4

@@ -198,7 +198,7 @@ AC_DEFUN([AST_CHECK_PWLIB_VERSION], [
 	fi
 
 	if test "${HAS_$2:-unset}" != "unset"; then
-		$2_VERSION=`grep "$VNAME" ${$2_INCDIR}/$3 | sed -e 's/[[[:space:]]]\{1,\}/ /g' | cut -f3 -d ' ' | sed -e 's/"//g'`
+		$2_VERSION=`grep "$VNAME \"" ${$2_INCDIR}/$3 | sed -e 's/[[[:space:]]]\{1,\}/ /g' | cut -f3 -d ' ' | sed -e 's/"//g'`
 		$2_MAJOR_VERSION=`echo ${$2_VERSION} | cut -f1 -d.`
 		$2_MINOR_VERSION=`echo ${$2_VERSION} | cut -f2 -d.`
 		$2_BUILD_NUMBER=`echo ${$2_VERSION} | cut -f3 -d.`

configure

@@ -1,5 +1,5 @@
 #! /bin/sh
-# From configure.ac Revision: 375189 .
+# From configure.ac Revision: 379547 .
 # Guess values for system-dependent variables and create Makefiles.
 # Generated by GNU Autoconf 2.68 for asterisk trunk.
 #
@@ -25523,7 +25523,7 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 	fi
 
 	if test "${HAS_PWLIB:-unset}" != "unset"; then
-		PWLIB_VERSION=`grep "$VNAME" ${PWLIB_INCDIR}/ptbuildopts.h | sed -e 's/[[:space:]]\{1,\}/ /g' | cut -f3 -d ' ' | sed -e 's/"//g'`
+		PWLIB_VERSION=`grep "$VNAME \"" ${PWLIB_INCDIR}/ptbuildopts.h | sed -e 's/[[:space:]]\{1,\}/ /g' | cut -f3 -d ' ' | sed -e 's/"//g'`
 		PWLIB_MAJOR_VERSION=`echo ${PWLIB_VERSION} | cut -f1 -d.`
 		PWLIB_MINOR_VERSION=`echo ${PWLIB_VERSION} | cut -f2 -d.`
 		PWLIB_BUILD_NUMBER=`echo ${PWLIB_VERSION} | cut -f3 -d.`
@@ -25856,7 +25856,7 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 	fi
 
 	if test "${HAS_OPENH323:-unset}" != "unset"; then
-		OPENH323_VERSION=`grep "$VNAME" ${OPENH323_INCDIR}/openh323buildopts.h | sed -e 's/[[:space:]]\{1,\}/ /g' | cut -f3 -d ' ' | sed -e 's/"//g'`
+		OPENH323_VERSION=`grep "$VNAME \"" ${OPENH323_INCDIR}/openh323buildopts.h | sed -e 's/[[:space:]]\{1,\}/ /g' | cut -f3 -d ' ' | sed -e 's/"//g'`
 		OPENH323_MAJOR_VERSION=`echo ${OPENH323_VERSION} | cut -f1 -d.`
 		OPENH323_MINOR_VERSION=`echo ${OPENH323_VERSION} | cut -f2 -d.`
 		OPENH323_BUILD_NUMBER=`echo ${OPENH323_VERSION} | cut -f3 -d.`