Remove 'override' keyword, which breaks the build on HPUX, and probably anywhere else that Makefile.shlib needs to modify CFLAGS to produce valid code for a shared library.  I'm not real clear on *why* the use of override causes make to ignore the later attempt to assign CFLAGS		+= but it indubitably does --- at least on gmake 3.79.1.  gmake bug?
Remove 'override' keyword, which breaks the build on HPUX, and probably
anywhere else that Makefile.shlib needs to modify CFLAGS to produce
valid code for a shared library.  I'm not real clear on *why* the use
of override causes make to ignore the later attempt to assign
CFLAGS		+=
but it indubitably does --- at least on gmake 3.79.1.  gmake bug?

lintzc/gpdb,kaknikhil/gpdb,adam8157/gpdb,zaksoup/gpdb,CraigHarris/gpdb,Quikling/gpdb,lisakowen/gpdb,Quikling/gpdb,chrishajas/gpdb,lisakowen/gpdb,randomtask1155/gpdb,foyzur/gpdb,techdragon/Postgres-XL,CraigHarris/gpdb,kmjungersen/PostgresXL,xuegang/gpdb,Chibin/gpdb,lpetrov-pivotal/gpdb,yuanzhao/gpdb,adam8157/gpdb,tpostgres-projects/tPostgres,zeroae/postgres-xl,50wu/gpdb,chrishajas/gpdb,royc1/gpdb,Chibin/gpdb,xuegang/gpdb,ahachete/gpdb,royc1/gpdb,ashwinstar/gpdb,oberstet/postgres-xl,royc1/gpdb,atris/gpdb,tangp3/gpdb,Quikling/gpdb,edespino/gpdb,CraigHarris/gpdb,xinzweb/gpdb,zaksoup/gpdb,postmind-net/postgres-xl,rvs/gpdb,kaknikhil/gpdb,lpetrov-pivotal/gpdb,kaknikhil/gpdb,royc1/gpdb,lintzc/gpdb,lintzc/gpdb,yuanzhao/gpdb,kmjungersen/PostgresXL,jmcatamney/gpdb,Postgres-XL/Postgres-XL,Chibin/gpdb,0x0FFF/gpdb,cjcjameson/gpdb,chrishajas/gpdb,janebeckman/gpdb,randomtask1155/gpdb,zeroae/postgres-xl,janebeckman/gpdb,lisakowen/gpdb,edespino/gpdb,edespino/gpdb,ashwinstar/gpdb,oberstet/postgres-xl,ovr/postgres-xl,yazun/postgres-xl,jmcatamney/gpdb,postmind-net/postgres-xl,jmcatamney/gpdb,rubikloud/gpdb,foyzur/gpdb,Postgres-XL/Postgres-XL,yuanzhao/gpdb,adam8157/gpdb,kaknikhil/gpdb,Chibin/gpdb,lintzc/gpdb,rvs/gpdb,atris/gpdb,Quikling/gpdb,chrishajas/gpdb,yuanzhao/gpdb,xuegang/gpdb,ashwinstar/gpdb,janebeckman/gpdb,kaknikhil/gpdb,yazun/postgres-xl,greenplum-db/gpdb,royc1/gpdb,rubikloud/gpdb,oberstet/postgres-xl,Postgres-XL/Postgres-XL,Chibin/gpdb,CraigHarris/gpdb,yuanzhao/gpdb,lintzc/gpdb,randomtask1155/gpdb,royc1/gpdb,janebeckman/gpdb,snaga/postgres-xl,tpostgres-projects/tPostgres,arcivanov/postgres-xl,xuegang/gpdb,atris/gpdb,edespino/gpdb,jmcatamney/gpdb,adam8157/gpdb,ovr/postgres-xl,snaga/postgres-xl,randomtask1155/gpdb,pavanvd/postgres-xl,0x0FFF/gpdb,yazun/postgres-xl,edespino/gpdb,50wu/gpdb,xinzweb/gpdb,randomtask1155/gpdb,lpetrov-pivotal/gpdb,rvs/gpdb,rvs/gpdb,kaknikhil/gpdb,janebeckman/gpdb,pavanvd/postgres-xl,Postgres-XL/Postgres-XL,xuegang/gpdb,royc1/gpdb,chrishajas/gpdb,50wu/gpdb,atris/gpdb,Quikling/gpdb,yazun/postgres-xl,0x0FFF/gpdb,jmcatamney/gpdb,tpostgres-projects/tPostgres,0x0FFF/gpdb,lpetrov-pivotal/gpdb,adam8157/gpdb,techdragon/Postgres-XL,foyzur/gpdb,0x0FFF/gpdb,ahachete/gpdb,cjcjameson/gpdb,atris/gpdb,Chibin/gpdb,cjcjameson/gpdb,cjcjameson/gpdb,janebeckman/gpdb,cjcjameson/gpdb,tpostgres-projects/tPostgres,arcivanov/postgres-xl,tangp3/gpdb,greenplum-db/gpdb,postmind-net/postgres-xl,pavanvd/postgres-xl,ovr/postgres-xl,oberstet/postgres-xl,kaknikhil/gpdb,CraigHarris/gpdb,lpetrov-pivotal/gpdb,foyzur/gpdb,xuegang/gpdb,janebeckman/gpdb,Quikling/gpdb,cjcjameson/gpdb,xinzweb/gpdb,foyzur/gpdb,rvs/gpdb,lisakowen/gpdb,greenplum-db/gpdb,yuanzhao/gpdb,cjcjameson/gpdb,greenplum-db/gpdb,oberstet/postgres-xl,rubikloud/gpdb,kmjungersen/PostgresXL,xinzweb/gpdb,ovr/postgres-xl,chrishajas/gpdb,rubikloud/gpdb,ashwinstar/gpdb,cjcjameson/gpdb,zaksoup/gpdb,yuanzhao/gpdb,CraigHarris/gpdb,rvs/gpdb,0x0FFF/gpdb,ovr/postgres-xl,zeroae/postgres-xl,lintzc/gpdb,snaga/postgres-xl,jmcatamney/gpdb,janebeckman/gpdb,zeroae/postgres-xl,kaknikhil/gpdb,ashwinstar/gpdb,cjcjameson/gpdb,xuegang/gpdb,randomtask1155/gpdb,atris/gpdb,lpetrov-pivotal/gpdb,greenplum-db/gpdb,tangp3/gpdb,randomtask1155/gpdb,ahachete/gpdb,Quikling/gpdb,tangp3/gpdb,postmind-net/postgres-xl,foyzur/gpdb,edespino/gpdb,ahachete/gpdb,yazun/postgres-xl,yuanzhao/gpdb,CraigHarris/gpdb,rvs/gpdb,randomtask1155/gpdb,50wu/gpdb,ahachete/gpdb,lintzc/gpdb,arcivanov/postgres-xl,techdragon/Postgres-XL,edespino/gpdb,xuegang/gpdb,lisakowen/gpdb,ashwinstar/gpdb,techdragon/Postgres-XL,snaga/postgres-xl,zaksoup/gpdb,Chibin/gpdb,chrishajas/gpdb,ahachete/gpdb,rubikloud/gpdb,ashwinstar/gpdb,CraigHarris/gpdb,xinzweb/gpdb,zaksoup/gpdb,arcivanov/postgres-xl,xinzweb/gpdb,rubikloud/gpdb,adam8157/gpdb,tpostgres-projects/tPostgres,foyzur/gpdb,Chibin/gpdb,pavanvd/postgres-xl,rvs/gpdb,xuegang/gpdb,greenplum-db/gpdb,rubikloud/gpdb,arcivanov/postgres-xl,royc1/gpdb,xinzweb/gpdb,Quikling/gpdb,atris/gpdb,Chibin/gpdb,techdragon/Postgres-XL,lisakowen/gpdb,cjcjameson/gpdb,Quikling/gpdb,yuanzhao/gpdb,lpetrov-pivotal/gpdb,tangp3/gpdb,CraigHarris/gpdb,0x0FFF/gpdb,zeroae/postgres-xl,tangp3/gpdb,zaksoup/gpdb,0x0FFF/gpdb,50wu/gpdb,janebeckman/gpdb,rubikloud/gpdb,lintzc/gpdb,edespino/gpdb,kaknikhil/gpdb,yuanzhao/gpdb,jmcatamney/gpdb,Chibin/gpdb,kmjungersen/PostgresXL,kmjungersen/PostgresXL,lisakowen/gpdb,jmcatamney/gpdb,zaksoup/gpdb,foyzur/gpdb,arcivanov/postgres-xl,xinzweb/gpdb,ahachete/gpdb,zaksoup/gpdb,chrishajas/gpdb,edespino/gpdb,snaga/postgres-xl,tangp3/gpdb,tangp3/gpdb,atris/gpdb,ashwinstar/gpdb,greenplum-db/gpdb,adam8157/gpdb,janebeckman/gpdb,50wu/gpdb,adam8157/gpdb,rvs/gpdb,lintzc/gpdb,lpetrov-pivotal/gpdb,rvs/gpdb,kaknikhil/gpdb,lisakowen/gpdb,ahachete/gpdb,50wu/gpdb,50wu/gpdb,postmind-net/postgres-xl,Postgres-XL/Postgres-XL,greenplum-db/gpdb,pavanvd/postgres-xl,Quikling/gpdb,edespino/gpdb