update-rc.d.bbclass: make prerm and postrm dpkg-compatible
update-rc.d.bbclass: make prerm and postrm dpkg-compatible

* prerm : only stop service at the "upgrade" and "remove" steps
* postrm : only remove symlinks at the "remove" and "purge" steps, after
  checking the init script no longer exists

JamesAng/oe,xifengchuo/openembedded,hulifox008/openembedded,dellysunnymtech/sakoman-oe,thebohemian/openembedded,anguslees/openembedded-android,xifengchuo/openembedded,crystalfontz/openembedded,mrchapp/arago-oe-dev,trini/openembedded,openembedded/openembedded,sentient-energy/emsw-oe-mirror,SIFTeam/openembedded,openembedded/openembedded,giobauermeister/openembedded,philb/pbcl-oe-2010,yyli/overo-oe,openpli-arm/openembedded,crystalfontz/openembedded,SIFTeam/openembedded,sledz/oe,scottellis/overo-oe,nx111/openembeded_openpli2.1_nx111,sledz/oe,JamesAng/oe,libo/openembedded,sledz/oe,openembedded/openembedded,dellysunnymtech/sakoman-oe,dave-billin/overo-ui-moos-auv,mrchapp/arago-oe-dev,openembedded/openembedded,rascalmicro/openembedded-rascal,bticino/openembedded,rascalmicro/openembedded-rascal,crystalfontz/openembedded,xifengchuo/openembedded,philb/pbcl-oe-2010,sampov2/audio-openembedded,JamesAng/goe,rascalmicro/openembedded-rascal,sentient-energy/emsw-oe-mirror,yyli/overo-oe,mrchapp/arago-oe-dev,philb/pbcl-oe-2010,buglabs/oe-buglabs,xifengchuo/openembedded,John-NY/overo-oe,John-NY/overo-oe,giobauermeister/openembedded,Martix/Eonos,sledz/oe,nx111/openembeded_openpli2.1_nx111,trini/openembedded,sledz/oe,BlackPole/bp-openembedded,scottellis/overo-oe,anguslees/openembedded-android,John-NY/overo-oe,mrchapp/arago-oe-dev,yyli/overo-oe,yyli/overo-oe,Martix/Eonos,Martix/Eonos,buglabs/oe-buglabs,bticino/openembedded,John-NY/overo-oe,rascalmicro/openembedded-rascal,philb/pbcl-oe-2010,thebohemian/openembedded,trini/openembedded,openpli-arm/openembedded,yyli/overo-oe,scottellis/overo-oe,thebohemian/openembedded,libo/openembedded,sampov2/audio-openembedded,openpli-arm/openembedded,sutajiokousagi/openembedded,giobauermeister/openembedded,xifengchuo/openembedded,sentient-energy/emsw-oe-mirror,JamesAng/goe,crystalfontz/openembedded,libo/openembedded,xifengchuo/openembedded,sledz/oe,libo/openembedded,xifengchuo/openembedded,philb/pbcl-oe-2010,nx111/openembeded_openpli2.1_nx111,philb/pbcl-oe-2010,sampov2/audio-openembedded,libo/openembedded,bticino/openembedded,sentient-energy/emsw-oe-mirror,hulifox008/openembedded,bticino/openembedded,sentient-energy/emsw-oe-mirror,trini/openembedded,sentient-energy/emsw-oe-mirror,dellysunnymtech/sakoman-oe,dellysunnymtech/sakoman-oe,bticino/openembedded,dellysunnymtech/sakoman-oe,JamesAng/oe,sutajiokousagi/openembedded,buglabs/oe-buglabs,giobauermeister/openembedded,Martix/Eonos,sampov2/audio-openembedded,hulifox008/openembedded,Martix/Eonos,buglabs/oe-buglabs,buglabs/oe-buglabs,yyli/overo-oe,JamesAng/oe,philb/pbcl-oe-2010,BlackPole/bp-openembedded,anguslees/openembedded-android,dave-billin/overo-ui-moos-auv,sampov2/audio-openembedded,dave-billin/overo-ui-moos-auv,JamesAng/goe,dellysunnymtech/sakoman-oe,nx111/openembeded_openpli2.1_nx111,anguslees/openembedded-android,nx111/openembeded_openpli2.1_nx111,scottellis/overo-oe,BlackPole/bp-openembedded,openpli-arm/openembedded,openembedded/openembedded,sledz/oe,xifengchuo/openembedded,sutajiokousagi/openembedded,buglabs/oe-buglabs,openpli-arm/openembedded,openpli-arm/openembedded,sutajiokousagi/openembedded,bticino/openembedded,thebohemian/openembedded,openembedded/openembedded,mrchapp/arago-oe-dev,John-NY/overo-oe,anguslees/openembedded-android,sampov2/audio-openembedded,libo/openembedded,dave-billin/overo-ui-moos-auv,bticino/openembedded,scottellis/overo-oe,SIFTeam/openembedded,anguslees/openembedded-android,JamesAng/goe,thebohemian/openembedded,Martix/Eonos,hulifox008/openembedded,giobauermeister/openembedded,rascalmicro/openembedded-rascal,mrchapp/arago-oe-dev,thebohemian/openembedded,sampov2/audio-openembedded,dave-billin/overo-ui-moos-auv,JamesAng/goe,nx111/openembeded_openpli2.1_nx111,JamesAng/goe,crystalfontz/openembedded,JamesAng/oe,BlackPole/bp-openembedded,JamesAng/goe,dellysunnymtech/sakoman-oe,giobauermeister/openembedded,openembedded/openembedded,Martix/Eonos,JamesAng/oe,buglabs/oe-buglabs,giobauermeister/openembedded,hulifox008/openembedded,crystalfontz/openembedded,sutajiokousagi/openembedded,sutajiokousagi/openembedded,dave-billin/overo-ui-moos-auv,BlackPole/bp-openembedded,openembedded/openembedded,trini/openembedded,hulifox008/openembedded,thebohemian/openembedded,SIFTeam/openembedded,trini/openembedded,JamesAng/oe,mrchapp/arago-oe-dev,SIFTeam/openembedded,openembedded/openembedded,rascalmicro/openembedded-rascal,John-NY/overo-oe,libo/openembedded,openembedded/openembedded,dave-billin/overo-ui-moos-auv,SIFTeam/openembedded,rascalmicro/openembedded-rascal,anguslees/openembedded-android,BlackPole/bp-openembedded,openembedded/openembedded,buglabs/oe-buglabs,nx111/openembeded_openpli2.1_nx111,scottellis/overo-oe,xifengchuo/openembedded,yyli/overo-oe,SIFTeam/openembedded,crystalfontz/openembedded,giobauermeister/openembedded,nx111/openembeded_openpli2.1_nx111,hulifox008/openembedded,giobauermeister/openembedded,rascalmicro/openembedded-rascal,dellysunnymtech/sakoman-oe,trini/openembedded,openpli-arm/openembedded,yyli/overo-oe,sentient-energy/emsw-oe-mirror,scottellis/overo-oe,sutajiokousagi/openembedded,John-NY/overo-oe,BlackPole/bp-openembedded,dellysunnymtech/sakoman-oe