parsing fails on a package name with no lowercase letters

[Peter Budny]

In create_package_list(), the following at line 46:

for oldpacks in $(sed -e "/^.*[a-z].*/d" "${TLPDBDIR}"/package.names)

is troublesome when there is a package name that contains no letters. I found one such package to be "GS1". This will cause line 48:

if [ ${oldpacks} -lt ${G_RR} ]

to fail with the message:

/usr/share/g-ctan/fetch: line 48: [: GS1: integer expression expected

Fix:

Change the sed expression from

"/^.*[a-z].*/d"

to

"/^.*[a-zA-Z].*/d"

(Although I'm not sure why it isn't more restrictive, i.e. actually looking for "^name [a-zA-Z0-9]+$")