Merge pull request #79 from davidlt/IB/CMSSW_6_2_X/stable

[IB/CMSSW_6_2_X/stable] DAS, ICC, GDB, GIT, LHAPDF, NCURSES
Merge pull request #84 from davidlt/IB/CMSSW_6_2_X/stable

[IB/CMSSW_6_2_X/stable] SWIG and LHAPDF.
cms-git-tools: new external

Signed-off-by: David Abdurachmanov <David.Abdurachmanov@cern.ch>
Merge pull request #86 from ktf/cms-git-tools

cms-git-tools: new external
Build v0.3 of cms-git-tools.
Merge pull request #87 from ktf/cms-git-tools-v0.3

Build v0.3 of cms-git-tools.
apt: add Acquire::Retry=3 to apt.conf

Signed-off-by: David Abdurachmanov <davidlt@cern.ch>