Prohibit CIELAB conversion functions calls with integer types
Move module installation configuration to separate file

- moduleinstall.pri is now used by module.pri and wrapper.pro
- into.pro adds the 3rdparty directory to build
Re-disable tracking of PiiMatrix

Matrices are too often used as value types e.g. as return values from
functions. While tracking matrix references/pointers would otherwise make
sense, handling the all-too-common return value case would be way too
tedious. Thus, matrices will not be tracked.
Merge branch 'master' of github.com:topiolli/into