Fix ignore list of disabled modules in BasisPack module

[schuhschuh]

Issue by schuhschuh
Friday Jan 01, 2016 at 17:29 GMT
Originally opened as cmake-basis/legacy#516

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The BasisPack.cmake module adds the directories of disabled modules to the CPACK_SOURCE_IGNORE_FILES list. This does not yet consider the new PROJECT_MODULE_DIRS, only the single PROJECT_MODULES_DIR within which all modules are expected to be located.