t.rast.algebra: add support for suffix option in output map names

[veroandreo]

Currently, G7:t.rast.algebra uses "basename_n" (n=1,2,3...number of maps in the strds) as naming scheme for output maps. This makes it a bit difficult to sort them afterwards (#2736), particularly, when one runs some processing not in the temporal framework on them (hence, the output maps are not registered into a strds).

It would be great to also have suffix parameter in t.rast.algebra as well as G7:t.rast.mapcalc, as it is already in G7:t.rast.aggregate with the possibility to have granularity, time or numerical suffix (with zero padding). There are comments on this issue in #2294, but the ticket was for t.rast.aggregate.

[neteler]

Ticket retargeted after milestone closed

[veroandreo]

patch for old grass version to implement suffix

[veroandreo]

This was a patch written by Luca some time ago to implement suffix for G7:t.rast.algebra and G7:t.rast.mapcalc, but there were errors in the testsuite.

[huhabla]

I have implemented the suffix option in t.rast.algebra in grass trunk revision r72478. Please test.

[veroandreo]

YAY!!! Just tested the 3 different suffix in G7:t.rast.algebra and they work as expected. Thanks! :)