exiv2 no longer requires a non commercial option for lens database
integration since version 0.27. See [1] and [2]
The BR2_PACKAGE_EXIV2_LENSDATA option is maintained because the
src/nikonmn_int.cpp file always specifies that the Nikon lens name
database is free to use in non-commercial, GPL or open source software
only.
Legacy handling for the removed option COMMERCIAL is not needed, since
now it's always enabled.
Add the dedicated BSD-3-Clause license file for CMakeLists.txt,
config/FindEXPAT.cmake and config/FindMSGFMT.cmake files.
[1] 07f63003b7
[2] 085d8a309a
Signed-off-by: Nicolas Serafini <nicolas.serafini@sensefly.com>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
f99d6a9852