Merge pull request #235 from smuzaffar/master

move icc build to 74x
Run cms-init before doing a git config.
Merge pull request #236 from ktf/master

Run cms-init before doing a git config.
Define a few git variables globally.
Merge pull request #237 from ktf/master

Define a few git variables globally.
More global git parameters.
Merge pull request #238 from ktf/master

More global git parameters.
Use http to fetch cmssw sources.
Merge pull request #239 from ktf/master

Use http to fetch cmssw sources.
Typo.
disable root6 and threaded ibs of 73x
Do not check for certificate due to missing CA on slc5
Revert change using git cms-init.

Apparently git cms-init and git cms-merge-topic do not play nicely the
one with the other, since the only reason for that was to do a local git
config (previously going to the wrong repo, BTW), I simply do a global
config and forget about it.
Unpack requests at the same level as before.
Add quotes around cmsbuild name.
Add Alessandro to request and approve build of releases
Setup IBs for CMSSW_7_4_CLANG_X
Merge pull request #240 from nclopezo/add-74-clang-ibs

Setup IBs for CMSSW_7_4_CLANG_X
Add CMSSW_7_4_0_pre1 for slc6_amd64_gcc481 as .
Setup IBs for CMSSW_7_3_DEBUG_X