New build system and maybe repository organization.

svn path=/branches/iCub.2.0/; revision=3535
new example directory for contributed modules

svn path=/branches/iCub.2.0/; revision=3860
exporting build tree working

svn path=/branches/iCub.2.0/; revision=3912
better separations of files, added templates

svn path=/branches/iCub2.0/; revision=4136
missing file

svn path=/branches/iCub2.0/; revision=4137
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svn path=/branches/iCub2.0/; revision=4138
better organization

svn path=/branches/iCub2.0/; revision=4139
moving files for better organization

svn path=/branches/iCub2.0/; revision=4140
better organization of directories, for public include in libraries

svn path=/branches/iCub2.0/; revision=4141
new files

svn path=/branches/iCub2.0/; revision=4142
emacs tmp files

svn path=/branches/iCub2.0/; revision=4143
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svn path=/branches/iCub2.0/; revision=4144
minor fix

svn path=/branches/iCub2.0/; revision=4145
header files grouping

svn path=/branches/iCub2.0/; revision=4146
cleanup .cmake files

svn path=/branches/iCub2.0/; revision=4147
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svn path=/branches/iCub2.0/; revision=4168
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svn path=/branches/iCub2.0/; revision=4169
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svn path=/branches/iCub2.0/; revision=4170
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svn path=/branches/iCub2.0/; revision=4171
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svn path=/branches/iCub2.0/; revision=4172