Merge branch 'release-0.3.2' into devel
updated project info
fixed memory leak, added more tests
fixed memory leak
build: updated configure to current program version

needed to rerun ./bootstrap to tell configure about version 0.3.2
changed automake from version 1.12.6 to 1.13.1.
It changed some makefiles and added test-driver script.
tests: added tests for XlsFile

- Tests don't need to be linked to xlslib
- access xlslib through an interface class "workbook"
- refactoring in XlsFile
removed trailing spaces
added/changed license note where needed
make use of config.h
issue #4: Failed to open file csv2xls (on Mac OSX)

parcecmd.cpp: Don't initialize optind=0

The system does that, but with value '1'. (see: man 3 getopt)
So value '0' was wrong.
Since we don't parse argv twice or more, there is no reason, to touch it.
issue #5: empty xls file

Donn't write a worksheet to a file, if it is empty or with just a head line.
renamed a test for str2ulong
_
Bumped version to 0.3.3
Merge branch 'release-0.3.3'