Preserve nil <-> NULL between Nimrod and database.
Merge branch 'devel' of github.com:Araq/Nimrod into devel

Merging mainline devel.
Merge branch 'devel' of github.com:Araq/Nimrod into devel

Merging mainline devel.
Merge branch 'devel' of github.com:Araq/Nimrod into devel

Merging mainline devel.
Tweaks for postgres driver (not tested yet).
Fixed missing color definion in docs CSS
Do not allow self import
Compare fileIndexes instead of file names
Added test case
niminst supports NSIS
improvements for niminst
added missing template file
more improvements for the NSIS installer
niminst: source based installation works again
niminst: 'doc/*.txt' required for bootstrapping
Update and clarify the purpose of the nimrod.ini file
Update the NSIS Installer Script
Merge pull request #1578 from Varriount/update-nsis-installer

Update the NSIS installer script.
readme.txt is not readme.md
Merge branch 'devel' of https://github.com/Araq/Nimrod into devel