Updated help in build.cmd. Added -? option that displays the command line syntax. Changed build.cmd to look for NAnt in the PATH and give a usefull error message if it cannot be found.
Updated help in build.cmd. Added -? option that displays the command line syntax.
Changed build.cmd to look for NAnt in the PATH and give a usefull error message if it cannot be found.


git-svn-id: 7230453ef4d2e9c957b80d4737114f575fc9f7f8@311972 13f79535-47bb-0310-9956-ffa450edef68

twcclegg/log4net,twcclegg/log4net,freedomvoice/log4net,freedomvoice/log4net,freedomvoice/log4net,twcclegg/log4net,freedomvoice/log4net,twcclegg/log4net