Log message:
Remove USE_PKGINSTALL from pkgsrc now that mk/install/pkginstall.mk
automatically detects whether we want the pkginstall machinery to be
used by the package Makefile.

Log message:
Fixed pkglint warnings. The warnings are mostly quoting issues, for
example MAKE_ENV+=FOO=${BAR} is changed to MAKE_ENV+=FOO=${BAR:Q}. Some
other changes are outlined in

    http://mail-index.netbsd.org/tech-pkg/2005/12/02/0034.html

Log message:
Create directories before installing files into them.

Log message:
Remove USE_BUILDLINK3 and NO_BUILDLINK; these are no longer used.

Log message:
Add RMD160 digests in addition to SHA1 ones.

Log message:
Rename ALL_TARGET to BUILD_TARGET for consistency with other *_TARGETs.
Suggested by Roland Illig, ok'd by various.

Log message:
dlopen.buildlink3.mk will automatically include dlcompat/buildlink3.mk
only on Darwin, so remove OPSYS check in dlcompat/buildlink3.mk and
make packages include dlopen.buildlink3.mk instead.

Log message:
Replace RPATH_FLAG with LINKER_RPATH_FLAG and COMPILER_RPATH_FLAG,
which are the full option names used to set rpath directives for the
linker and the compiler, respectively.  In places were we are invoking
the linker, use "${LINKER_RPATH_FLAG} <path>", where the space is
inserted in case the flag is a word, e.g. -rpath.  The default values
of *_RPATH_FLAG are set by the compiler/*.mk files, depending on the
compiler that you use.  They may be overridden on a ${OPSYS}-specific
basis by setting _OPSYS_LINKER_RPATH_FLAG and _OPSYS_COMPILER_RPATH_FLAG,
respectively.  Garbage-collect _OPSYS_RPATH_NAME and _COMPILER_LD_FLAG.

Log message:
Remove the ${OPSYS} test around inclusion of dlcompat/buildlink3.mk,
as that test is now done by the buildlink3 file itself.

Log message:
Convert to bl3.