Problem: MS-Windows: pathdef.c should depend on build options.
Solution: Generate pathdef.c in the object directory. Fix dependencies.
(Ken Takata, closes#4565)
Problem: Borland support is outdated and doesn't work.
Solution: Remove Borland support, there are other (free) compilers
available. (Thomas Dziedzic, Ken Takata, closes#4364)
Problem: .hgignore and .gitignore are either distributed or in git, not
both.
Solution: Add .gitignore to the distribution and .hgignore to git. Update
the entries. (Christian Brabandt, Ken Takata)