* Removes TNT Unicode controls, which are no longer required. All VCL controls now have native Unicode support.
* Remove Delphi 11 packages, otherwise we would either need to keep TNT or break Unicode
* PngComponents update from Uwe Raabe on http://cc.embarcadero.com/Item/26127
* Adjust auto build process
* Since Delphi 2009, Strings are now UnicodeStrings, not AnsiStrings any longer. Fix a bunch of compiler errors which came along with this change.
TODO: Project should compile but give tons of compiler warnings.
* Move const.inc and compilers.inc back to main source directory
* Move remaining few lines of code from heidicomp.pas to helpers.pas
* Remove components/compilerdetection and components/heidisql
* Remove remainders of EDBImage component, unused since Aug 08.
* Replace checklist box by a virtual tree with checkboxes
* Make "Maintenance" a single tab on a TPageControl, so there may follow other tools (e.g. issue #529)
* Replace button layout by a combobox
* Add "CHECKSUM" operation and various options
* Replace the pulldown by a list to get a better overview
* Display last connected and created date in details
* Prompt user on form closing if modifications should be saved
* Remove moreorless useless image
* Remove options "timeout" and "sort database"
TODO: Display some help text on the right side when no session at all is existant to help new users.
* Move "Create table|view|..." items into a submenu and have one single "Create" item
* Remove all above mentioned buttons from the main toolbar, leaving them in the context menus where there function is more predictable
* Streamline context menu of db tree and database tab
Fixes issue #1139, issue #1124, issue #1108, issue #820, issue #738, issue #595
(The diff tends to be unreadable here, as there are many automatic GUI adjustments after having removed a toolbar)
* Use AttrCount and Attribute[x] in SynEditHighlighters to iterate through available attributes, instead of doing less with more code.
* Use integer registry values for highlighter colors (were strings) and also integers for bold, italic, underline, strikeout (was one boolean per attribute).
a) optimizes registry access b) normalizes registry names and c) simplifies code. Unfortunately this breaks everyone's customized highlighter style - hopefully ok to do this is in an interim build.
Rewrite the old code a bit to make the automatic PChar->WideString conversion explicit, also add a block of code that tries to guess if the server is sending UTF-8 and react properly to that.
A step on the way to fixing issue #994.
