update tests because of v0.2 script changes

Test that pllua works.
http://redmine.alpinelinux.org/issues/503

This also tests that postgresql works.

fix bug with trailing slash on outdir and misc others

- allow run aots directly from git dir
- do not require the OUTFILE param, instead only out to stdout
- by default, run all tests even if any fails
- allow halt on first error with -e option
- send output from test to $tst.out
- allow specify outdir for *.out files with -o DIR
- no special logic for generic-apk
- strip .out from given test name so you can easily re-run all failed
  tests with: 'apts *.out'

Signed-off-by: Jeff Bilyk <jbilyk@gmail.com>

update README and add comments to script

apts: remove temporary stored APKBUILD

reformat script so it's easier to read and fix failed package handling

add apts.conf which contains directory where apts tests are