Incorrect use of PCS_NUMBER_MAX

[norihiro-w]

PCS_NUMBER_MAX is defined in makros.h and is currently used to define the maximum allowed number of secondary nodal variables and elemental variables. The following changes are desired

• use PCS_NUMBER_MAX to define the maximum allowed number of processes
• define other macros or constants to define the maximum allowed number of secondary nodal variables and elemental variables

Alternative way is using std::vector instead of fixed size array.