Remove Tools/vssdk*_tools/inc folder.

This folder contains only .h files which aren't used by Npgsql and takes a large space.
Repro unit test for #296
Merge branch 'bug296' of https://github.com/roji/Npgsql into bug_296
Simplfied repro unit test bugs #240 and #296

This is about as simple as I can make it.
Fix for bugs #240 and #296

Properly handle escaped single quote character ('') in a quoted section during query parameter substitution.
Bugs #249 and #296 Unit Test Improvements

Use close approximations to the repro queries supplied for these bugs, in addition to the simple one devised for diagnosis.
Remove debug/logging code.
Merge pull request #307 from glenebob/bug_296

Fix bugs #240 and  #296, parameter substituion troubles
EF: Fix INSERT INTO with no specified column values, by using DEFAULT VALUES.
Merge pull request #310 from Emill/master

EF: Fix INSERT INTO with no specified column values, by using DEFAULT VALUES.
Changed nuspec to indicate Postgresql support

Used to say 7.x, changed to "9.x and above officially supported"
Fix query parameter processing to more correctly match PostgreSQL's lexer
Parameter substitution processing: if we detect multiple statements in a query that is not allowed, quit immediately. Also improve readability.
Parameter substitution processing: fix a small bug in dollar quoted string processing.
Parameter substitution processing: don't touch output parameters.
Remove pdb files from Tools folder.

Those files aren't used and they only increase project size.
Fix milliseconds field handling when using NpgsqlCopySerializer.AddDateTime() method.

Fix #221
Npgsql wasn't formatting the milliseconds field correctly when sending a DataTime to server.
Thanks @stewienj for the patch.
Merge pull request #315 from Emill/query-parameter-processing-rewrite

Fix query parameter processing to more correctly match PostgreSQL's lexer
Merge pull request #293 from franciscojunior/292-remove-tools-vssdk-inc-folders

Remove Tools/vssdk*_tools/inc folders.
Merge pull request #318 from franciscojunior/remove-tools-vssdk-pdb-files

Remove pdb files from Tools folder.