(chocolateyGH-1949) add default variable for msbuild.configuration

In the .uppercut file, there is a call that is lacking a variable being
created. Ensure that it is set appropriately to a good default value
prior to being used.

Remove the call in the build.bat file as it is now unnecessary.

Author: ferventcoder

.uppercut

@@ -53,6 +53,7 @@
   <property name="app.strongname" value="C:${path.separator}Program Files${path.separator}Microsoft SDKs${path.separator}Windows${path.separator}v7.0A${path.separator}Bin${path.separator}sn.exe" />
   <property name="app.strongname" value="C:${path.separator}Program Files (x86)${path.separator}Microsoft SDKs${path.separator}Windows${path.separator}v7.0A${path.separator}Bin${path.separator}sn.exe" if="${not file::exists(app.strongname)}" />
 
+  <property name="msbuild.configuration" value="Release" overwrite="false" />
   <property name="path.key.name.private" value="${environment::get-variable('CHOCOLATEY_OFFICIAL_KEY')}" if="${environment::variable-exists('CHOCOLATEY_OFFICIAL_KEY') and msbuild.configuration == 'ReleaseOfficial'}" />
 
   <property name="app.signtool" value="C:${path.separator}Program Files${path.separator}Microsoft SDKs${path.separator}Windows${path.separator}v7.0A${path.separator}Bin${path.separator}signtool.exe" />

build.bat

@@ -13,7 +13,7 @@ SET BUILD_DIR=%~d0%~p0%
 SET NANT="%BUILD_DIR%lib\Nant\nant.exe"
 SET build.config.settings="%DIR%\.uppercut"
 
-%NANT% /logger:"NAnt.Core.DefaultLogger" /quiet /nologo /f:"%BUILD_DIR%.build\default.build" -D:build.config.settings=%build.config.settings% -D:msbuild.configuration="Release" %*
+%NANT% /logger:"NAnt.Core.DefaultLogger" /quiet /nologo /f:"%BUILD_DIR%.build\default.build" -D:build.config.settings=%build.config.settings% %*
 
 if %ERRORLEVEL% NEQ 0 goto errors