Log Message:
(math/R-energy) Update 1.7.10 to 1.7.11

# energy 1.7-11

*  User level changes
     - more argument types supported in bcdcor, dcov, dcor, pdcov,
       pdcor functions and tests
     - mutualIndep.test test of mutual independence (new)
     - is.dmatrix() utility function is now exported
     - calc_dist() (Rcpp export) is exported

*  Internal changes
     - C functions dCOVtest() and dCOV() simplified, now expect
       distance matrices, exponent handled in R
     - unused C function dCovtest() removed
     - .arg2dist.matrix() utility to convert valid types of args to
       distance matrices