Move libsigc++ to /usr. Update to 2.2.11
Merge pull request #892 from pyhalov/sigcpp

Move libsigc++ to /usr. Update to 2.2.11
Move cairomm to /usr
Move glibmm to /usr
Merge pull request #893 from pyhalov/sigcpp

Sigcpp
simplify libxml++
Move pangomm to /usr
Merge pull request #894 from pyhalov/sigcpp

Sigcpp
Move gtkmm to /usr
Merge pull request #895 from pyhalov/sigcpp

Move gtkmm to /usr
Cleanup components after relocating libraries to /usr
Merge pull request #896 from pyhalov/sigcpp

Cleanup components after relocating libraries to /usr