Add additional rules so that make init-po for ecpg gets up to date flex and bison output.  Without these, make can sometimes be tempted to invoke its built-in rules using lex and yacc, which can fail if those commands are not available.
Add additional rules so that make init-po for ecpg gets up to date flex and
bison output.  Without these, make can sometimes be tempted to invoke its
built-in rules using lex and yacc, which can fail if those commands are not
available.

This was a main cause for the NLS web site breakage.

zeroae/postgres-xl,adam8157/gpdb,yazun/postgres-xl,yuanzhao/gpdb,ashwinstar/gpdb,yazun/postgres-xl,xinzweb/gpdb,edespino/gpdb,techdragon/Postgres-XL,jmcatamney/gpdb,jmcatamney/gpdb,ovr/postgres-xl,edespino/gpdb,ovr/postgres-xl,yazun/postgres-xl,Chibin/gpdb,ashwinstar/gpdb,adam8157/gpdb,lisakowen/gpdb,zeroae/postgres-xl,kmjungersen/PostgresXL,jmcatamney/gpdb,pavanvd/postgres-xl,oberstet/postgres-xl,tpostgres-projects/tPostgres,50wu/gpdb,Chibin/gpdb,yazun/postgres-xl,kmjungersen/PostgresXL,50wu/gpdb,greenplum-db/gpdb,tpostgres-projects/tPostgres,Chibin/gpdb,edespino/gpdb,zeroae/postgres-xl,techdragon/Postgres-XL,Chibin/gpdb,edespino/gpdb,jmcatamney/gpdb,adam8157/gpdb,tpostgres-projects/tPostgres,lisakowen/gpdb,yuanzhao/gpdb,yuanzhao/gpdb,lisakowen/gpdb,tpostgres-projects/tPostgres,edespino/gpdb,Chibin/gpdb,postmind-net/postgres-xl,arcivanov/postgres-xl,Postgres-XL/Postgres-XL,adam8157/gpdb,jmcatamney/gpdb,Chibin/gpdb,postmind-net/postgres-xl,yuanzhao/gpdb,50wu/gpdb,jmcatamney/gpdb,ashwinstar/gpdb,xinzweb/gpdb,arcivanov/postgres-xl,kmjungersen/PostgresXL,ashwinstar/gpdb,ashwinstar/gpdb,snaga/postgres-xl,techdragon/Postgres-XL,arcivanov/postgres-xl,arcivanov/postgres-xl,pavanvd/postgres-xl,greenplum-db/gpdb,Chibin/gpdb,edespino/gpdb,Postgres-XL/Postgres-XL,50wu/gpdb,postmind-net/postgres-xl,50wu/gpdb,xinzweb/gpdb,lisakowen/gpdb,kmjungersen/PostgresXL,snaga/postgres-xl,xinzweb/gpdb,techdragon/Postgres-XL,xinzweb/gpdb,Postgres-XL/Postgres-XL,greenplum-db/gpdb,jmcatamney/gpdb,postmind-net/postgres-xl,oberstet/postgres-xl,xinzweb/gpdb,snaga/postgres-xl,postmind-net/postgres-xl,adam8157/gpdb,greenplum-db/gpdb,pavanvd/postgres-xl,ashwinstar/gpdb,kmjungersen/PostgresXL,yuanzhao/gpdb,ovr/postgres-xl,adam8157/gpdb,lisakowen/gpdb,lisakowen/gpdb,ashwinstar/gpdb,greenplum-db/gpdb,Chibin/gpdb,adam8157/gpdb,edespino/gpdb,adam8157/gpdb,arcivanov/postgres-xl,lisakowen/gpdb,lisakowen/gpdb,Postgres-XL/Postgres-XL,50wu/gpdb,yuanzhao/gpdb,oberstet/postgres-xl,greenplum-db/gpdb,jmcatamney/gpdb,yuanzhao/gpdb,oberstet/postgres-xl,snaga/postgres-xl,edespino/gpdb,yuanzhao/gpdb,pavanvd/postgres-xl,edespino/gpdb,greenplum-db/gpdb,yuanzhao/gpdb,zeroae/postgres-xl,tpostgres-projects/tPostgres,pavanvd/postgres-xl,techdragon/Postgres-XL,edespino/gpdb,yuanzhao/gpdb,50wu/gpdb,Chibin/gpdb,Postgres-XL/Postgres-XL,ovr/postgres-xl,xinzweb/gpdb,ashwinstar/gpdb,snaga/postgres-xl,zeroae/postgres-xl,xinzweb/gpdb,ovr/postgres-xl,yazun/postgres-xl,greenplum-db/gpdb,arcivanov/postgres-xl,oberstet/postgres-xl,50wu/gpdb,Chibin/gpdb