Don't explicitly link in crypt as it is not used on some platforms.

git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.4@46506 65c4cc65-6c06-0410-ace0-fbb531ad65f3

configure

@@ -23140,7 +23140,7 @@ fi
 
 
    if test "${ac_cv_lib_pq_PQexec}" = "yes"; then
-      PGSQL_LIB="-L${PGSQL_libdir} -lpq -lz -lcrypt"
+      PGSQL_LIB="-L${PGSQL_libdir} -lpq -lz"
       PGSQL_INCLUDE="-I${PGSQL_includedir}"
       PBX_PGSQL=1
    elif test ! -z "${PGSQL_MANDATORY}";

configure.ac

@@ -665,7 +665,7 @@ if test "${PG_CONFIG}" != No; then
    [Define to indicate the PostgreSQL library]), [], -L${PGSQL_libdir} -lz)
 
    if test "${ac_cv_lib_pq_PQexec}" = "yes"; then
-      PGSQL_LIB="-L${PGSQL_libdir} -lpq -lz -lcrypt"
+      PGSQL_LIB="-L${PGSQL_libdir} -lpq -lz"
       PGSQL_INCLUDE="-I${PGSQL_includedir}"
       PBX_PGSQL=1
    elif test ! -z "${PGSQL_MANDATORY}";