This change also fixes the bug where changing data series ranges was
impossible to do when the formula syntax was not Calc A1.

Doing it this way avoids having to re-generate the data ranges in
Calc A1 before passing it to the chart backend in Calc.  We need this
in order to remove the silly restriction that forces us to always pass
data range strings in Calc A1 format, which is error-prone.

This is also necessary in order to fix the bug that prevents editing
data ranges of an existing chart when the formula syntax is something
other than Calc A1.

nss-3.12.8/mozilla/security/coreconf/Darwin.mk claims gcc would pass
syslibroot according to passed -isysroot parameter, hence let's try it
for now, although I'm not 100% confident in this statement.
libs that get linked without syslibroot include libsqlite3.dylib - and
that is a known troublemaker…

We must build a directory tree structure corresponding to the files in
the .apk, and use that then in lo_apk_opendir()/readdir().

We can't just return the same subdirectory once for each time we come
across an entry that has it as a prefix in the zip directory.

Use the BSD-licensed "uthash" library (just one .h file actually) from
http://uthash.sourceforge.net/ .

This fixes commit cce76e65.

Apparently omitting parameter names is not valid C.

This allows to feed updates via a static .xml in a controlled environment.

The test doesn't do the actual jumping, but it only tests the validity
of the destination range(s).

The namespace handling in the spotlight plugin XML parser looks broken,
added some FIXMEs for that.

When creating a new page without using a page break, before a page
break, there was a remaining indicator. These are now checked and
removed to avoid such cases.

some little perf. improvements on saving spreadsheets

 - so that it is called before accessing polygon points