This commit was manufactured by cvs2svn to create branch 'RC_1_31_0'.

svn path=/branches/RC_1_31_0/boost/boost/integer/; revision=21427
Patches for cstdint support:

cygwin and mingw now use native stdint headers.
default header now compiles in -pedantic -ansi mode with gcc.

svn path=/branches/RC_1_31_0/boost/boost/cstdint.hpp; revision=21728