LBCORE-1006 Remote CMT versions and set install_project tags from git

First test with version/tag substitution in install project. format "%d" prints more than we want, and I couldn't get %D to work.

We could also have a python script do the replacement based on the output of git describe.

One missing functionality is the creation of LbLogin.sh (done in build/post-config I suppose).

Fixes LBCORE-1006

LbCERNLegacy/doc/release.notes

-2013-08-02  Ben Couturier  <Ben.Couturier@cern.ch>
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-	* z5/extra.sh: Add EOS to the path 
-	* z5/extra.csh: Add EOS to the path
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-2013-04-02  Ben Couturier  <Ben.Couturier@cern.ch>
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-        * z5/group_bashrc: Remove forced call to CMTCONFIG 
-        * z5/group_tcshrc: Remove forced call to CMTCONFIG 
-        * z5/group_zshrc: Remove forced call to CMTCONFIG 
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-2012-03-29  Ben Couturier  <Ben.Couturier@cern.ch>
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-	* doc/release.notes: Updated info for v1r3
-        * z5/group_login.csh: Added call to extras script
-        * z5/group_tcshrc: Added call to extras script
-        * z5/group_zshrc: Added call to extras script
-        * z5/group_login.zsh: Added call to extras script
-        * z5/group_login.sh: Added call to extras script
-        * z5/group_bashrc: Added call to extras script
-	* z5/extra.sh: Force CMTEXTRATAGS to host-slc5 for slc5.8
-	* z5/extra.csh: Force CMTEXTRATAGS to host-slc5 for slc5.8
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-2012-02-10  Ben Couturier  <Ben.Couturier@cern.ch>
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-	* doc/release.notes: Updated info for v1r2
-        * z5/group_login.csh: Changed to replace HPX_HEPGROUP_DIR by GROUP_DIR
-        * z5/group_tcshrc: Changed to replace HPX_HEPGROUP_DIR by GROUP_DIR
-        * z5/group_zshrc: Changed to replace HPX_HEPGROUP_DIR by GROUP_DIR
-        * z5/post/login.sh: Changed to replace HPX_HEPGROUP_DIR by GROUP_DIR
-        * z5/post/login.csh: Changed to replace HPX_HEPGROUP_DIR by GROUP_DIR
-        * z5/group_login.zsh: Changed to replace HPX_HEPGROUP_DIR by GROUP_DIR
-        * z5/group_login.sh: Changed to replace HPX_HEPGROUP_DIR by GROUP_DIR
-        * z5/group_bashrc: Changed to replace HPX_HEPGROUP_DIR by GROUP_DIR
-