Fix failing tests

1. Use of unitialized variable `equant` in analysis.F90
   caused any non-PI test to fail when compiled with
   floating-point checks (uncovered in PR #50).
   Fortunately, this bug did not really affect anything
   because we don't currently print equant anywhere.

2. Non-significant numerical difference in the HARMON test,
   which started showing up after a fix to numdiff.py in 4620895 in #51.

Author: danielhollas

src/abin.F90

@@ -38,7 +38,7 @@ program abin_dyn
 #endif
    implicit none
    ! TODO: These should probably be defined and stored in some module, not here
-   real(DP)    :: dt=20.0d0, eclas, equant
+   real(DP)    :: dt=20.0d0, eclas=0.0d0, equant=0.0d0
    integer     :: itrj
    LOGICAL     :: file_exists
    integer,dimension(8) :: time_start, time_end

tests/HARMON/restart.xyz.10.ref

@@ -67,7 +67,7 @@
    2.5598525275831154E-002   4.1583977679096086E-003
    0.0000000000000000     
    6.5528461252687033E-005   1.0644896653503255E-005   1.7292388099163244E-006
-   150.00002609814032        369.02517364208910     
+   0.1500000260981403E+03   0.3690251736420891E+03
    15.000078527454571     
    3.7721620805381687E-007
    1.7231261869251429E-007