AODN WAVE DM - parameters mapping bug

[lbesnard]

@bpasquer I'm currently working on the old AODN_WAVE_DM suite to make it current again. I noticed that this commit
dbe43f8#diff-00a225053e182e94d58a75b0937a4af68c420c4c282319df6a2e50fc1315293c
introduced a bug and broke the DOT code.

You added dbe43f8#diff-ff0a1bc389a3d97a224f7a603eb5f55edd65f84a08fcc7edd7981580e7ce9b5bR3

However this means that there are two values of "Total_Hs". One is analysed by spectral method (WSSH), while the other one by wave method (WHTH). How can you tell from the original varname which is which?