build: add win32 convenience build rule

Per: nodejs/node#27
See: nodejs/node#27 (comment)

ORIGINAL-PR: nodejs/node-v0.x-archive#9085
PORT-FROM: nodejs/node-v0.x-archive@6168fe6

/cc: @misterdjules

vcbuild.bat

@@ -65,6 +65,7 @@ if /i "%1"=="small-icu"     set i18n_arg=%1&goto arg-ok
 if /i "%1"=="full-icu"      set i18n_arg=%1&goto arg-ok
 if /i "%1"=="intl-none"     set i18n_arg=%1&goto arg-ok
 if /i "%1"=="download-all"  set download_arg="--download=all"&goto arg-ok
+if /i "%1"=="build-release" set nosnapshot=1&set config=Release&set msi=1&set licensertf=1&goto arg-ok
 
 echo Warning: ignoring invalid command line option `%1`.
 
@@ -195,6 +196,7 @@ echo   vcbuild.bat                : builds release build
 echo   vcbuild.bat debug          : builds debug build
 echo   vcbuild.bat release msi    : builds release build and MSI installer package
 echo   vcbuild.bat test           : builds debug build and runs tests
+echo   vcbuild.bat build-release  : builds the release distribution as used by nodejs.org
 goto exit
 
 :exit