This patch adds an utility for computing relative path according to a given
base directory. This is useful for libraries that are to install .lpk in
order to be used with lazarus. As these libraries may be compiled without
need to build depend on Lazarus, we add it in fp-utils package which is likely
to be used by any big project which build depends on fp-compiler.
* Removed declaration of legacy ncursus variables. (Closes: #789091)
These variables are now internal and no more exported by new ncursus
libraries.
* Removed Muti-Arch: same from packages with Architecture: all.
* Set Muti-Arch: same for fp-units-* packages to allow installing on
a host sytem for cross compiling.
* Set Muti-Arch: foreign for fp-docs* and fpc-source* to allow satisfying
dependency of other architectures using host architecture (all) package.