Revision 12684 breaks build on Fedora 17

[Ralph Lange]

Since revision 12684 the build on Fedora 17 (standard Jenkins executor on DEV@CloudBees) is broken:

RevisionState revno:12684 revid:<email address hidden>

[...]
/usr/bin/g++ -o dbStressTest -L/scratch/jenkins/workspace/Base-3.16.DEV_Build/lib/linux-x86_64 -L/scratch/jenkins/workspace/Base-3.16.DEV_Build/src/ioc/db/test/O.linux-x86_64 -Wl,-rpath,/scratch/jenkins/workspace/Base-3.16.DEV_Build/lib/linux-x86_64 -Wl,-rpath,/scratch/jenkins/workspace/Base-3.16.DEV_Build/src/ioc/db/test/O.linux-x86_64 -rdynamic -m64 dbStressLock.o dbTestIoc_registerRecordDeviceDriver.o -ldbTestIoc -ldbCore -lca -lCom
/usr/bin/ld: dbStressLock.o: undefined reference to symbol 'clock_gettime@@GLIBC_2.2.5'
/usr/bin/ld: note: 'clock_gettime@@GLIBC_2.2.5' is defined in DSO /lib64/librt.so.1 so try adding it to the linker command line
/lib64/librt.so.1: could not read symbols: Invalid operation
collect2: error: ld returned 1 exit status
make[3]: *** [dbStressTest] Error 1

[Ralph Lange (ralph-lange)]

man clock_gettime says:
Link with -lrt (only for glibc versions before 2.17).

[Ralph Lange (ralph-lange)]

Fix committed at revision 12692