[Thomas:
- rename package from libcairomm to cairomm in order to match
upstream name.
- put the package next to cairo in menuconfig
- add missing dependency on libsigc
- add missing depends on BR2_INSTALL_LIBSTDCPP
- fix license: it's LGPLv2+, not LGPLv2.]
Signed-off-by: James Knight <james.knight@rockwellcollins.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
