add test-case for EDB-22679

Change-Id: Ie4e8548e3202cb1561276ef7480281053867b6fe
add dxf import tests

Change-Id: Ied78545abb9807acfc634ca97a1ca00a163ffa19
add test-case for CVE-2010-1681

Change-Id: I2ff8ee15fb7416ea5c8b7a8101ec12c8d371734b
Conditional jump or move depends on uninitialised value(s)

   at 0x2DC948DF: connectivity::dbase::ODbaseTable::fillColumns() (DTable.cxx:330)
...
   by 0x2C57E3B3: ScDocShell::DBaseImport(rtl::OUString const&, unsigned short, ScColWidthParam*, ScFlatBoolRowSegments&) (docsh8.cxx:345)

bff + valgrind: sf_52f907dbea3069ba59ef1e183a0f4160-430.pcx
fuzz a pcx long enough and it turns into a dbase file

Change-Id: Idf1622d6b55ae2cca381f263333d0ab0b6a469b2
check return of Execute row and propogate error code

Change-Id: I75b2c454122aa2d75d66dc46865135e01277bbcb
add calc dbase import test

Change-Id: I6dd23b5dfab096f67a189ce2747b211b2a3044e9