wrap all library code into namespace if VCMI_LIB_NAMESPACE is defined

preparation for having client and server in a single process

lib/LogicalExpression.cpp

@@ -14,8 +14,12 @@
 #include "VCMI_Lib.h"
 #include "CGeneralTextHandler.h"
 
+VCMI_LIB_NAMESPACE_BEGIN
+
 std::string LogicalExpressionDetail::getTextForOperator(std::string operation)
 {
 	//placed in cpp mostly to avoid unnecessary includes in header
 	return VLC->generaltexth->localizedTexts["logicalExpressions"][operation].String();
 }
+
+VCMI_LIB_NAMESPACE_END