file->proxy(), memory leak fixes, more debug etc. etc.

Rev: src/array.c:1.24
Rev: src/builtin_functions.c:1.65
Rev: src/error.c:1.11
Rev: src/modules/Oracle/oracle.c:1.7
Rev: src/modules/files/file.c:1.72
Rev: src/modules/system/system.c:1.40
Rev: src/signal_handler.c:1.27
Rev: src/threads.c:1.55
Rev: src/threads.h:1.28