Fixed the INI compilation on Linux by reverting to the original library.

Fixed an infinite loop in the parsing of command specification strings.
Added the option to retrieve common configs with a fall back value if they don't exist.
Few other minor changes.

cbp/ModINI.cbp

@@ -379,6 +379,7 @@
 			<Add directory="../include" />
 			<Add directory="../config/common" />
 		</Compiler>
+		<Unit filename="../external/Common/ConvertUTF.cpp" />
 		<Unit filename="../modules/ini/Common.cpp" />
 		<Unit filename="../modules/ini/Common.hpp" />
 		<Unit filename="../modules/ini/Document.cpp" />