Build System fixes

Hey All (and especially gstein)

I have finally finished all of the build system updates that I wanted to make
and I am planning on checking them in later today after one last test.

This fixes several things:
1) make install and make check now work on platforms with or without DB.
2) make -j2 works on platforms with DB.

A couple of questions.

1) I used my previously explained approach, which gstein expressed discomfort
about. Is that a veto-ing discomfort or should I check it in?

2) With Berkeley DB 3.3.11, the build db in tree doesn't work without changing
the libs line in ac-helpers/berkeley-db.m4 to:
LIBS="$LIBS -L$dbdir/.libs -ldb-3.3"
from
LIBS="$LIBS -L$dbdir -ldb"

This is because libdb.so is not created until install time. Is this change
okay with everyone?

-- 
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Kevin Pilch-Bisson                    http://www.pilch-bisson.net
     "Historically speaking, the presences of wheels in Unix
     has never precluded their reinvention." - Larry Wall
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~