Error handling for psql not found

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extra : source : 386d6329eaac9157a489a193f94f8a1748a34a99
Merge pull request #381 from einhverfr/master

Error handling for psql not found
Changelog update and sql fix for 1228

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extra : source : f61e92acc00f9cb9a9f5ab7d3752627047dc01cd
Merge pull request #383 from einhverfr/master

Changelog update and sql fix for 1228
Fixing pricematrix vendor price handling

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extra : source : ae4301469edf7487fb5999cac8661bfa1de3e96b
Patching install, Bill Applebe's fix

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extra : source : 3dc25a406a7fc1019628bda0a53ac981d4f9ec21
Updating changelog and contributors file

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extra : source : c51416683f69e7642f5027ebd3d42ae58c2a0135
Merge pull request #387 from einhverfr/master

Fixing pricematrix vendor price handling
Merge pull request #389 from einhverfr/master

Bill's additions to the INSTALL file
added sysconfig tests

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extra : source : fb0d68734023d09469ba16ebd498e35253431d1f
Merge pull request #392 from einhverfr/master

added sysconfig tests
Fixing sales tax bug Bill A reported.

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extra : source : 1d863d07841a8edcadcc4faf0c43a1f5424f1252
Merge pull request #394 from einhverfr/master

Fixing sales tax bug Bill A reported.
Updated psgi support, including tested starman support.

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extra : source : a6ff974e566e60d64205cb19175df68d67326b21
Changelog entry

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extra : source : 698c91ea1ab0f48784751e6b848dc6f46c8b0e37
Updating makefile

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extra : source : 094447824ac8d61c529c34e6d09081c28d729e1e
Merge pull request #396 from einhverfr/master

Plack and Starman
Bill's updated documentation

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extra : source : 1c051642cce2e74103093e9ba737ce5b299f732c
Merge pull request #398 from einhverfr/master

Bill's updated documentation
Better plack docs and makefile adjustments