[PATCH] Added support for parsing temperature in the dive, header

[vavincavent]

Hi all,

I have 2 dive computers.
* Aladin pro, with it, temperature is not supported yet by 
libdivecomputer (just one data in the header).
* Aladin square, it's not supported by libdivecomputer yet.

Before discuss about calculus, age of captain, etc... Is it not more 
important that libdivecomputer just transfer basics data and support the 
more divecomputer as possible?

Vavincavent