Use build result objects as follow-up build sources
Use build result objects as follow-up build sources

Using buld result objects instead of file names seems to make scons better
synchronize its internal stuff (makes difference only in EPEL).

vpodzime/libblockdev,snbueno/libblockdev,rhinstaller/libblockdev,atodorov/libblockdev,atodorov/libblockdev,dashea/libblockdev,rhinstaller/libblockdev,atodorov/libblockdev,rhinstaller/libblockdev,vpodzime/libblockdev,vpodzime/libblockdev,snbueno/libblockdev,dashea/libblockdev