The find-prefix infrastructure was required in a pkgviews world where
packages installed from pkgsrc could have different installation
prefixes, and this was a way for a dependency prefix to be determined.
Now that pkgviews has been removed there is no longer any need for the
overhead of this infrastructure. Instead we use BUILDLINK_PREFIX.pkg
for dependencies pulled in via buildlink, or LOCALBASE/PREFIX where the
dependency is coming from pkgsrc.
Provides a reasonable performance win due to the reduction of `pkg_info
-qp` calls, some of which were redundant anyway as they were duplicating
the same information provided by BUILDLINK_PREFIX.pkg.
Pkgsrc changes:
* fix some pkglint warining
* add DESTDIR support.
Changes:
* Fix a bug of exclusive control when dictionary is opened in MultiThreading environment.
* When installing the Windows version, it came to be able to specify the character-code of the dictionary.
* Fix a problem that was not able to be compiled correctly by some compilers.
* Add API that changes partial, analytical mode (Tagger::set_partial())
* Add API that changes generation level of lattice (Tagger::set_lattice_level())
* Add API that changes temperature parameter (Tagger::set_theta())
* Add API that changes all candidate output mode (Tagger::set_all_morphs())
