This fixes an issue with generating a proper compileline during the  build process. If CHPL_HOME was set incorrectly prior to building, the SysCTypes.chpl file was not generated properly. This was not an issue for clean builds where CHPL_HOME was unset, but became a problem if there were multiple possible CHPL_HOME values (e.g. a 1.5.0 install).
This fixes an issue with generating a proper compileline during the 
build process. If CHPL_HOME was set incorrectly prior to building,
the SysCTypes.chpl file was not generated properly. This was not an
issue for clean builds where CHPL_HOME was unset, but became a problem
if there were multiple possible CHPL_HOME values (e.g. a 1.5.0 install).



git-svn-id: 88467cb1fb04b8a755be7e1ee1026be4190196ef@20239 3a8e244f-b0f2-452b-bcba-4c88e055c3ca

sungeunchoi/chapel,sungeunchoi/chapel,chizarlicious/chapel,chizarlicious/chapel,chizarlicious/chapel,sungeunchoi/chapel,hildeth/chapel,CoryMcCartan/chapel,hildeth/chapel,hildeth/chapel,CoryMcCartan/chapel,CoryMcCartan/chapel,sungeunchoi/chapel,sungeunchoi/chapel,CoryMcCartan/chapel,chizarlicious/chapel,chizarlicious/chapel,sungeunchoi/chapel,CoryMcCartan/chapel,chizarlicious/chapel,hildeth/chapel,hildeth/chapel,sungeunchoi/chapel,CoryMcCartan/chapel,chizarlicious/chapel,CoryMcCartan/chapel,hildeth/chapel,hildeth/chapel,sungeunchoi/chapel