AppVeyor config: hopefully fix setting debug/release package suffix

appveyor.yml

@@ -52,7 +52,7 @@ install:
   # CMake always seems to default to the latest version of Visual Studio, not the one on
   # the current PATH.
   - cmake -G "%Generator%" -A %PLATFORM% -DDEBUG=1
-    -DCPACK_PACKAGE_VERSION_PATCH=0_appveyor_ci_%CONFIGURATION%
+    -DPACKAGE_VERSION_PATCH=0_appveyor_ci_%CONFIGURATION%
     %APPVEYOR_BUILD_FOLDER%\infrastructure\cmake\windows
 
   # Leave the current directory in the correct place to find the solution file using its relative path above.

infrastructure/cmake/CMakeLists.txt

@@ -751,6 +751,9 @@ set_tests_properties(bbackupd PROPERTIES TIMEOUT 1200)
 set_tests_properties(s3store PROPERTIES TIMEOUT 20)
 set_tests_properties(httpserver PROPERTIES TIMEOUT 40)
 
+# This may be overridden by the CMake command line to add an extra suffix:
+set(PACKAGE_VERSION_PATCH "0" CACHE STRING "Package version suffix (patch version)")
+
 set(CPACK_PACKAGE_DESCRIPTION_SUMMARY "Box Backup is an open source, completely automatic, on-line backup system")
 set(CPACK_PACKAGE_VENDOR "www.BoxBackup.org")
 set(CPACK_PACKAGE_DESCRIPTION_FILE "${base_dir}/README.md")
@@ -759,7 +762,7 @@ set(CPACK_PACKAGE_VERSION_MAJOR "0")
 set(CPACK_PACKAGE_VERSION_MINOR "12")
 string(TIMESTAMP date "%Y%m%d" UTC)
 # This may be overridden by the CMake command line to add an extra suffix:
-set(CPACK_PACKAGE_VERSION_PATCH "0")
+set(CPACK_PACKAGE_VERSION_PATCH "${PACKAGE_VERSION_PATCH}")
 set(CPACK_PACKAGE_INSTALL_DIRECTORY "Box Backup")
 set(CPACK_COMPONENTS_ALL Applications)
 set(CPACK_GENERATOR "ZIP;NSIS")