(svn r3286) -Fix: [OSX] 10.2 works again and universal binaries got 10.2 as target by default

(svn r3285) -Codechange: Tron was confused by a name, so let's make him happy,
prefixed it with 'tmp', so now we know it is a temp char* :)

(svn r3284) -Fix: DoCommand always cleans up _cmd_text (tnx to Tron)

(svn r3283) -Fix: decode_parameters was still used, while _cmd_text is the way
-Fix: _cmd_text is cleared after a command, so we need to store it
temporaray in order to first test the command, before executing

(svn r3282) - Codechange: Replace tests against CMD_ERROR with CmdFailed()

(svn r3281) -Feature: [OSX] added native cocoa sound and video drivers (egladil)
you can still use SDL drivers if you like and you have to run "make upgradeconf" to start using the cocoa drivers (or manually write WITH_COCOA:=1)
since SDL breaks the cocoa drivers, you can't compile with both SDL and cocoa support
Using cocoa drivers makes it easier to make universal binaries and it solves:
-FS#18 [OSX] SDL is weird in universal binaries
-FS#2 [OSX] lazy pointer crash on exit
-FS#10 [OSX] linking error when linking statically to SDL 1.2.8 (needless to explain this, but it means it should be able to compile statically with the default settings now)
-[ 1215073 ] Switching to large size out of fullscreen crashes
Using SDL drivers will still have those issues though

(svn r3280) Merge the seperate (C|CXX|OBJC)_SOURCES variables into a single variable SRCS
Now adding a new file to compile is just adding a line like SRCS += $(FIILE), regardless of type

(svn r3279) -Fix: do not try to execute something that is not set to execute
-Fix: do not increase an uid number if it isn't returned

(svn r3278) -Fix: lets update the tail-pointer if we add a new item, else the linkedlist never grows ;)

(svn r3277) -Fix: lets use the right DoCommand for testing a build (tnx to Igor2Code)