Promoted all material in namespace tr1 to namespace std.
Implemented P_DETACH on Windows NT.  Fixed __p_overlay constant for dynamic linking.  Updated qa tests for clib.  Updated docs on spawn... functions.
Fixed minor typo and a debug comment in dospnwnt.c
Merge pull request #36 from pchapin/master

Promoted all material in namespace tr1 to namespace std.
Merge pull request #37 from ArmstrongJ/process

Implementation of P_DETACH for spawn functions on Windows NT
fix for OW bugzilla problem #979, enable 3 characters length field in mangled names (C++ compiler)