typ file: changed wind generator image

Now it's unlikely to be mistaken as an airport symbol.
typ2legend.pl XPM refactoring

A new class Typ2Legend::XPM was created for the XPM parsing code,
together with a new test.
data update
Typ2Legend::XPM: also support for line XPMs
Typ2Legend::XPM: trailing comma is now accepted, but optional
typ2legend.pl refactoring and improvements

Now using Typ2Legend::XPM. Also, $item is now an (internally defined)
Typ2Legend::item object.

New option -noprefer15.

Tooltips for day vs. night images.

Improved Pod.
misc/Makefile: added typ2legend targets

Also, the garmin zip file now contains the map legend, and README
documents this.
miscsrc.t test fix: skip directories
new module GPS::Symbols::Garmin

The functions here (get_symbol_to_img, get_cached_symbol_to_img) were
refactored from BBBikeGPS.pm.

Updated also MANIFEST.
GPS::GpsmanData::Tk: display waypoint symbols

Using new GPS::Symbols::Garmin module.
GPS::GpsmanData::Tk: delete photos in destructor
GPS::GpsmanData::Tk: mark functionality also for associated waypoints

That is, in the command callback "-wpt" is set also for associated
waypoints, which is interpreted by GPS::GpsmanData::TkViewer.
Pod work for GPS::GpsmanData::Tk and ::TkViewer

New Pod for TkViewer.pm, which also includes remaining TODOs (some
were previously mentioned as comments).

Updated/fixed Pod for Tk.pm.
show_mark: start animation with "full" mark

Previously the faintest stipple ("gray12") was shown first.
data update
improved bbd.pod documentation

More examples, more links, some clarifications.
gpsman2bbd.pl: fixed a remaining call to BBBikeGPS::get_symbol_to_img

Replaced with a call to GPS::Symbols::Garmin.
show_mark: make blinking mark top-most

Reasoning: the blinking mark does not hide map elements permanently,
and vanishes after a few blinks anyway, so it can be raised above
everything. On the other hand, if the mark is steady, then use the
normal stack order (which is below most map layers, but above
area-like elements).
data update (u.a. additions in Eiche and Mehrow, and B2 -> L200)
bbd2mapservhtml.pl: clarify "XXX_prog: no_routelist" directive