• Rename "make test" so packagers don't think it's a good idea to run it
  during builds.
• Error check sizes in vars_get_variable()
• Fix some file size comparisons
• make SONAME reflect the correct values.
• Fix some uses of "const"
• Compile with -O2 by default
• Fix some strict-aliasing violations
• Fix some of the .pc files and how we do linking to work better.