Log Message:
* Set GNU_CONFIGURE_PREFIX instead of setting each of the --bindir,
  --infodir, --mandir, etc.  As a side-effect, this corrects the location
  of the installed info files and man pages to be under "gdbada".

* Pass LDFLAGS through to the build via MAKE_FLAGS so that pkgsrc's rpath
  flags are passed to the linker.

* Remove deprecated USE_NEW_TEXINFO.

* List info files in the PLIST instead of the package Makefile.

Bump the PKGREVISION to 2.