Fix spelling of "Don't."

Adapted from Debian:
http://sources.debian.net/src/wmfrog/0.2.0-4/debian/patches/30-wmfrog.c-no-output.patch/
Rename wmFrog.c to wmfrog.c.

Previously, the binary wmfrog was built from the source file wmFrog.c,
resulting in a Lintian "source-is-missing" error when building a Debian package.
This patch fixes this issue by renaming wmFrog.c to wmfrog.c.

Adapted from Debian:
http://sources.debian.net/src/wmfrog/0.3.1%2Bds-2/debian/patches/renamed-wmfrog.c.patch/
New Metereological Station Information Lookup page

This patch updates the url of the NOAA's Metereological Station
Information Lookup page in the INSTALL documentation file and and the wmfrog
--help text.

It also updates the url of the METAR/TAF information page mentioned by the
wmfrog --help text.

Adapted from Debian:
http://sources.debian.net/src/wmfrog/0.3.1%2Bds-2/debian/patches/new-station-lookup-url.patch/
http://sources.debian.net/src/wmfrog/0.3.1%2Bds-2/debian/patches/renamed-wmfrog.c.patch/
Fix weather.pl typos.
New line skip in weather.pl.

Previously, there were 12 lines between the "START BODY OF TEXT HERE" comment
and the time in the html file downloaded from weather.noaa.gov for processing
weather information.  Now, however, the number of lines has increased to 21,
and weather.pl was not able to correctly parse the weather information.

Adapted from Debian:
http://sources.debian.net/src/wmfrog/0.3.1%2Bds-2/debian/patches/weather.pl-new-line-skip.patch/
Check that $tmpfolder/$station exists.

Otherwise, grep returns a "No such file or directory" error if it doesn't.

Adapted from Debian:
http://sources.debian.net/src/wmfrog/0.3.1%2Bds-2/debian/patches/20-weather.pl.patch/
Don't include wmfrog binary in tarball.

Its inclusion causes a "source-contains-prebuilt-binary" Lintian warning when
building a Debian package.
Merge pull request #1 from d-torrance/debian-patches

Debian patches