Fix dependency on <stdint.h> for Microsoft

Microsoft compilers do not support the C99 <stdint.h> header prior
to its adoption in C++11, first delivered in VC2010.
Fix some minor formatting issues

As reported by bde_verify.
Corrections after testing with vc2008
[APPROVAL] pending/master/bitutil_should_not_use_stdint_on_windows_drqs53201213 to master
[APPROVAL] INTERNAL merge-fix-bdldfp-stlport-build-drqs-54236699 to master

Base commit: 01fe50c098b6ae39183a7b98ff2c1a3f7c653f49
update configure instructions for waf build

Since `waf` is now provided through the bde-tools repository, running
`python waf configure` fails.  This change updates the documentation for
the configuration step since `waf` will now be found in `PATH`.
Merge branch 'waf-configure-doc-update' of https://github.com/ericvw/bde into pending/master/ericvw-waf-configure-doc-update
[APPROVAL] pending/master/ericvw-waf-configure-doc-update to master