sb118: Replace (heavily modified) CppUnit 1.8.0 with (unmodified) latest 1.12.1.

- Old modifications were necessary for testshl2, which has simply been excluded
  from the build for now.
- Tests in basebmp, basegfx, o3tl (that are executed during build) have been
  converted from using modified CppUnit/testshl2 to using unmodified CppUnit.
- CppUnit's DllPlugInTester has problems with OOo tests on Windows, see
  #i107562#, so for now a new cppunittester from sal is used instead.

postprocess/prj/build.lst

-po	postprocess	::	accessibility automation basctl bean fondu BINFILTER:binfilter chart2 configmgr CRASHREP:crashrep dbaccess desktop dtrans embeddedobj embedserv EPM:epm eventattacher extensions extras fileaccess filter forms fpicker helpcontent2 hwpfilter io JAVAINSTALLER2:javainstaller2 lingucomponent MATHMLDTD:MathMLDTD ODK:odk officecfg package padmin psprint_config remotebridges sc scaddins sccomp scp2 scripting sd setup_native slideshow starmath sw sysui testshl2 testtools ucb UnoControls unoxml ure wizards xmerge xmlsecurity BITSTREAM_VERA_FONTS:bitstream_vera_fonts DICTIONARIES:dictionaries OOo:pyuno OOo:readlicense_oo SO:top unodevtools JFREEREPORT:jfreereport REPORTBUILDER:reportbuilder reportdesign SDEXT:sdext SWEXT:swext writerfilter oox NULL
+po	postprocess	::	accessibility automation basctl bean fondu BINFILTER:binfilter chart2 configmgr CRASHREP:crashrep dbaccess desktop dtrans embeddedobj embedserv EPM:epm eventattacher extensions extras fileaccess filter forms fpicker helpcontent2 hwpfilter io JAVAINSTALLER2:javainstaller2 lingucomponent MATHMLDTD:MathMLDTD ODK:odk officecfg package padmin psprint_config remotebridges sc scaddins sccomp scp2 scripting sd setup_native slideshow starmath sw sysui testtools ucb UnoControls unoxml ure wizards xmerge xmlsecurity BITSTREAM_VERA_FONTS:bitstream_vera_fonts DICTIONARIES:dictionaries OOo:pyuno OOo:readlicense_oo SO:top unodevtools JFREEREPORT:jfreereport REPORTBUILDER:reportbuilder reportdesign SDEXT:sdext SWEXT:swext writerfilter oox NULL
 po	postprocess			    	usr1	-	all	po_mkout NULL
 po	postprocess\checkxml		nmake	-	all	po_checkxml NULL
 po	postprocess\checkdeliver	nmake	-	all	po_checkdlv NULL