meta-toolchain.bb: introduce modify_opkg_conf
meta-toolchain.bb: introduce modify_opkg_conf

By modifying the opkg config files in the toolchain, the toolchain can
expend itself by installing packages from the repository.  The default
is to use DISTRO_FEED_URI.

xifengchuo/openembedded,openembedded/openembedded,JamesAng/goe,philb/pbcl-oe-2010,nx111/openembeded_openpli2.1_nx111,sampov2/audio-openembedded,giobauermeister/openembedded,yyli/overo-oe,sledz/oe,John-NY/overo-oe,troth/oe-ts7xxx,trini/openembedded,JamesAng/oe,Martix/Eonos,JrCs/opendreambox,scottellis/overo-oe,sledz/oe,Martix/Eonos,demsey/openenigma2,bticino/openembedded,giobauermeister/openembedded,nvl1109/openembeded,popazerty/openembedded-cuberevo,openpli-arm/openembedded,openpli-arm/openembedded,trini/openembedded,demsey/openenigma2,nx111/openembeded_openpli2.1_nx111,John-NY/overo-oe,Martix/Eonos,philb/pbcl-oe-2010,openpli-arm/openembedded,KDAB/OpenEmbedded-Archos,dave-billin/overo-ui-moos-auv,openembedded/openembedded,sentient-energy/emsw-oe-mirror,BlackPole/bp-openembedded,bticino/openembedded,openpli-arm/openembedded,openembedded/openembedded,John-NY/overo-oe,troth/oe-ts7xxx,philb/pbcl-oe-2010,buglabs/oe-buglabs,openembedded/openembedded,mrchapp/arago-oe-dev,JamesAng/goe,YtvwlD/od-oe,nx111/openembeded_openpli2.1_nx111,SIFTeam/openembedded,philb/pbcl-oe-2010,mrchapp/arago-oe-dev,yyli/overo-oe,JamesAng/goe,KDAB/OpenEmbedded-Archos,demsey/openembedded,nzjrs/overo-openembedded,nlebedenco/mini2440,buglabs/oe-buglabs,mrchapp/arago-oe-dev,thebohemian/openembedded,popazerty/openembedded-cuberevo,SIFTeam/openembedded,nzjrs/overo-openembedded,YtvwlD/od-oe,SIFTeam/openembedded,demsey/openenigma2,libo/openembedded,anguslees/openembedded-android,crystalfontz/openembedded,popazerty/openembedded-cuberevo,Martix/Eonos,sutajiokousagi/openembedded,openembedded/openembedded,troth/oe-ts7xxx,xifengchuo/openembedded,philb/pbcl-oe-2010,popazerty/openembedded-cuberevo,anguslees/openembedded-android,nzjrs/overo-openembedded,Martix/Eonos,crystalfontz/openembedded,bticino/openembedded,YtvwlD/od-oe,JamesAng/oe,bticino/openembedded,popazerty/openembedded-cuberevo,demsey/openembedded,sampov2/audio-openembedded,scottellis/overo-oe,nx111/openembeded_openpli2.1_nx111,hulifox008/openembedded,philb/pbcl-oe-2010,nvl1109/openembeded,nlebedenco/mini2440,yyli/overo-oe,yyli/overo-oe,buglabs/oe-buglabs,xifengchuo/openembedded,BlackPole/bp-openembedded,openembedded/openembedded,sledz/oe,Martix/Eonos,JrCs/opendreambox,dellysunnymtech/sakoman-oe,giobauermeister/openembedded,sutajiokousagi/openembedded,thebohemian/openembedded,buglabs/oe-buglabs,demsey/openembedded,sentient-energy/emsw-oe-mirror,JamesAng/goe,YtvwlD/od-oe,openembedded/openembedded,buglabs/oe-buglabs,sentient-energy/emsw-oe-mirror,sentient-energy/emsw-oe-mirror,nx111/openembeded_openpli2.1_nx111,yyli/overo-oe,rascalmicro/openembedded-rascal,nzjrs/overo-openembedded,demsey/openenigma2,KDAB/OpenEmbedded-Archos,crystalfontz/openembedded,crystalfontz/openembedded,demsey/openembedded,scottellis/overo-oe,BlackPole/bp-openembedded,JrCs/opendreambox,sutajiokousagi/openembedded,KDAB/OpenEmbedded-Archos,nzjrs/overo-openembedded,bticino/openembedded,trini/openembedded,YtvwlD/od-oe,thebohemian/openembedded,trini/openembedded,demsey/openenigma2,popazerty/openembedded-cuberevo,JrCs/opendreambox,sentient-energy/emsw-oe-mirror,libo/openembedded,thebohemian/openembedded,giobauermeister/openembedded,troth/oe-ts7xxx,crystalfontz/openembedded,rascalmicro/openembedded-rascal,demsey/openenigma2,sutajiokousagi/openembedded,anguslees/openembedded-android,buglabs/oe-buglabs,Martix/Eonos,John-NY/overo-oe,sampov2/audio-openembedded,YtvwlD/od-oe,BlackPole/bp-openembedded,BlackPole/bp-openembedded,nlebedenco/mini2440,buglabs/oe-buglabs,hulifox008/openembedded,JamesAng/goe,dellysunnymtech/sakoman-oe,mrchapp/arago-oe-dev,yyli/overo-oe,BlackPole/bp-openembedded,nlebedenco/mini2440,nlebedenco/mini2440,mrchapp/arago-oe-dev,libo/openembedded,xifengchuo/openembedded,dave-billin/overo-ui-moos-auv,sampov2/audio-openembedded,JamesAng/oe,JrCs/opendreambox,giobauermeister/openembedded,philb/pbcl-oe-2010,scottellis/overo-oe,dave-billin/overo-ui-moos-auv,nx111/openembeded_openpli2.1_nx111,giobauermeister/openembedded,John-NY/overo-oe,demsey/openembedded,JamesAng/goe,troth/oe-ts7xxx,hulifox008/openembedded,yyli/overo-oe,openembedded/openembedded,troth/oe-ts7xxx,troth/oe-ts7xxx,crystalfontz/openembedded,nvl1109/openembeded,sentient-energy/emsw-oe-mirror,nlebedenco/mini2440,sampov2/audio-openembedded,sledz/oe,JrCs/opendreambox,dellysunnymtech/sakoman-oe,dave-billin/overo-ui-moos-auv,xifengchuo/openembedded,nvl1109/openembeded,anguslees/openembedded-android,buglabs/oe-buglabs,dellysunnymtech/sakoman-oe,John-NY/overo-oe,bticino/openembedded,scottellis/overo-oe,scottellis/overo-oe,dellysunnymtech/sakoman-oe,xifengchuo/openembedded,nx111/openembeded_openpli2.1_nx111,xifengchuo/openembedded,rascalmicro/openembedded-rascal,sledz/oe,nvl1109/openembeded,openpli-arm/openembedded,libo/openembedded,trini/openembedded,SIFTeam/openembedded,JamesAng/oe,JrCs/opendreambox,giobauermeister/openembedded,crystalfontz/openembedded,SIFTeam/openembedded,sledz/oe,JrCs/opendreambox,sutajiokousagi/openembedded,anguslees/openembedded-android,mrchapp/arago-oe-dev,dave-billin/overo-ui-moos-auv,JamesAng/goe,demsey/openembedded,thebohemian/openembedded,sledz/oe,openembedded/openembedded,hulifox008/openembedded,dellysunnymtech/sakoman-oe,sentient-energy/emsw-oe-mirror,KDAB/OpenEmbedded-Archos,anguslees/openembedded-android,SIFTeam/openembedded,yyli/overo-oe,sampov2/audio-openembedded,YtvwlD/od-oe,thebohemian/openembedded,hulifox008/openembedded,sutajiokousagi/openembedded,YtvwlD/od-oe,thebohemian/openembedded,nx111/openembeded_openpli2.1_nx111,SIFTeam/openembedded,JrCs/opendreambox,dave-billin/overo-ui-moos-auv,dellysunnymtech/sakoman-oe,rascalmicro/openembedded-rascal,anguslees/openembedded-android,libo/openembedded,dellysunnymtech/sakoman-oe,mrchapp/arago-oe-dev,xifengchuo/openembedded,hulifox008/openembedded,JamesAng/oe,dave-billin/overo-ui-moos-auv,xifengchuo/openembedded,JamesAng/oe,BlackPole/bp-openembedded,John-NY/overo-oe,nvl1109/openembeded,scottellis/overo-oe,rascalmicro/openembedded-rascal,sutajiokousagi/openembedded,demsey/openembedded,rascalmicro/openembedded-rascal,popazerty/openembedded-cuberevo,giobauermeister/openembedded,openpli-arm/openembedded,KDAB/OpenEmbedded-Archos,demsey/openenigma2,hulifox008/openembedded,giobauermeister/openembedded,openpli-arm/openembedded,trini/openembedded,nlebedenco/mini2440,sampov2/audio-openembedded,libo/openembedded,dellysunnymtech/sakoman-oe,KDAB/OpenEmbedded-Archos,nzjrs/overo-openembedded,libo/openembedded,rascalmicro/openembedded-rascal,openembedded/openembedded,bticino/openembedded,popazerty/openembedded-cuberevo,trini/openembedded,nvl1109/openembeded,JamesAng/oe,rascalmicro/openembedded-rascal,nzjrs/overo-openembedded,openembedded/openembedded