(svn r8816) [Config] -Fix: if you disable stripping, don't detect strip at all

(svn r8814) [Config] -Add: added --awk and detect_awk. We now try to find an awk on the user system which allows gsub(). If not found, you can define one yourself, or it tells you versions you might want to install

(svn r8813) -Fix r8812: fixed one GNU depending grep statement with an other ;) Switched to egrep, which should work just fine.

(svn r8812) -Revert r7880: those changes assumed a GNU-grep, which isn't always available. Reverted back to a bit more ugly way of writing greps, but at least they are not bound to the laws of GNU.

(svn r8811) [Configure] -Fix: [:lower:] for tr is GNU specific. Use [a-z] instead. (Celestar)

(svn r8810) [Configure] -Fix: "" variables if you test them, else if they are empty they return lovely errors (tnx to Celester for finding thisone ;))

(svn r8809) -Fix (r8715): accidentally removed a part of an expression.

(svn r8808) -Fix [FS#631]: do not show the 'edit sign' window for spectators.

(svn r8807) -Feature: Add support for loading (some of) the TTDP extra chunks mainly list of GRFIDs and TTDP version the game was saved with.
GRFID list is read and active GRFs are loaded with the game if present in the data/ directory.
TTDP versioning information only works for newer versions, old versions will only give rough information but it's not worth the effort to precisely figure out what bit means what where and when.

(svn r8806) -Codechange (r7582): Remove a duplicate append of static GRF's when loading the game and hide the intrinsics of adding elements to the GRFConfig list by using an AppendToGRFConfigList function.