Add Caliper support

[daboehme]

Adds support for profiling with Caliper. When enabled, forwards the built-in timed regions to Caliper and records parameters and figure-of-merit in Adiak. Caliper measurements can be enabled with the --caliper-config switch or with the CALI_CONFIG environment. Example:

$ ./qs --caliper-config runtime-report,calc.inclusive
[...]
Path                       Min time/rank Max time/rank Avg time/rank Time %
main                            5.737632      5.737632      5.737632 98.042800
  mainloop                      5.737514      5.737514      5.737514 98.040779
    cycleInit                   0.557564      0.557564      0.557564  9.527477
    cycleTracking               5.174895      5.174895      5.174895 88.426925
      cycleTracking_Kernel      5.107095      5.107095      5.107095 87.268383
      cycleTracking_MPI         0.064550      0.064550      0.064550  1.103012
    cycleFinalize               0.002067      0.002067      0.002067  0.035317