Fix indentation in dCosDihedral()
Combine CosTheta() and dCosTheta() into single function
Combine CosDihedral() and dCosDihedral() into single function
Optimize CosTheta()
Fold some expressions in CosDihedral()
Fold even more expressions in CosDihedral()
Remove *_rv_{x,y,z} variables
Do not create objects for ji, lj, ki, kj and li pairs
Remove 3 unnecessary conditional operators for CosDihedral()
Simplify dCosDihedral calculation
Simplify de2 calculation
Remove dCosDihedral_COMMON_INC macro completely
Remove terms which are equal to zero
Make TRACE() macro more clear
Merge branch 'angular-functions-redesigned' into mdtk-core-current
Merge branch 'trace-macro-ng' into mdtk-core-current
Do not specify -march even for heavy optimized builds
Remove obsolete code from Ackland and TightBinding potentials
Move primitive spline access functions to the headers
Remove typedef for obsolete 'Index' data type

'Index' data type was typedef'ed to size_t and is no longer needed